How To Test And Replace Stock Petcock Valve On must Motorcycle Gas Tanks

[@TwoWheelRocco]

Yes it would. Gas will leak into your intake throw petcock vacuum hose. Test, if bad replace.. And she will run like new.. Let us know how this works out. Thank you for your Sub Luis. Ride Safe and have a great day.

[@bagsyme]

Just started to try fixing and old Sportster 1200 that hasn't been in traffic for decades. I'm not a mechanic so it's just trial and error and your videos really helps! Thanks!!

[@TwoWheelRocco]

Happy to help. Any questions just ask. Thank you for watching all your support. Ride safe and have a great day. Good luck with the new ride.

[@bagsyme]

@@TwoWheelRocco Plenty of questions, but one step at a time! Just ordered a new petcock and hopefully that will make it start without start gas spray. 💪🏽

[@TwoWheelRocco]

Let us know how it works out when you get to Peacock.

[@bagsyme]

@@TwoWheelRocco so I cleaned the tank, changed petcock, bought and mounted a new battery, filled her up with premium gas. Started with start gas spray and got her running as long as I throttle a little. After a few start ups I didn't need the spray and she started on full choke, but on idle she dies. Watched your other clips about issues so I located the the idle screw(?) and tweaked back and forth just man guessing (it's a swedish term for not actually knowing how to). So it got both better and worse but not so she worked without a little throttle. I have a sportster från 1997 and the petcock doesn't have a vacuum hose, is there something else I can do or another screw to tigthen or loosen up or is it in the carburateur the problem is? Thanks!

[@santo3120]

Another amazing and informative video. Extremely helpful as attempt to fix my bike. Great instructors, step by step explanations, exact tools you need...and tips. Thank you.

[@TwoWheelRocco]

Happy to Help, Any questions just ask, Thank you for your support. Ride Safe and have a great day

[@mosalah35]

Rocco, you suggested testing the fuel valve from another video- I tested, was leaking, and just swapped them, what a difference. It runs like a different bike, problems solved. thank you for these videos and answering all us in the comments, big thank you

[@TwoWheelRocco]

Happy all went well. Thank you for watching all your support moralah. Ride safe and have a great day.

[@jimcalvillo8206]

Great video. I bought a 05 1200c a couple of years ago. It never ran good and I thought I needed to have the carb worked on. The pet cock started leaking when I turned the gas on. I changed the Petcock today and was amazed how much better it now runs. Your video assisted me on the repair.

[@TwoWheelRocco]

Happy to help. Yes that's where it all starts at that Petcock. When you have a leak in your diaphragm in your Petcock, You will get fuel into your intake through the vacuum line. Makes for a very lousy running motor. Thank you for watching and all your support Jim. Ride safe and have a great day.

[@melostmo]

nice - wish I'd seen this sooner. Took me several hours messing with my Sportster before I finally figured out what was going wrong.

[@TwoWheelRocco]

Happy to help, Let us know how this works out. Ride Safe and have a great day.

[@luismauricio914]

This was a great help! No need to pay an arm or a leg! Did everything here on my 01 1200 sportster, and she is running purrty!!! Thank you!!!!

[@TwoWheelRocco]

Happy to Help, Any questions just ask. Thank you for your Sub Luis. Ride Safe and have a great day.

[@jodiehighroller9820]

@@TwoWheelRoccoI got gas leaking down onto the filter just a little as well petcock is damp

[@TwoWheelRocco]

This video covers it. You need to rebuild your Petcock. Any questions just ask that will be a Dealer part. Let us know how it works out. Thank you for watching all your support. Jodie. Ride safe and have a great day.

[@jasonshortphd]

Great video. I have a 92 883 that I recently purchased. After changing the oil, plugs etc I got the bike running. Took it for a ride, came back and checked the oil. The oil smells like gas. Noticed the petcock even when off was letting fuel through. So now I will be replacing the petcock.

[@TwoWheelRocco]

Very notorious problem the diaphragm leak gas into the motor. Get her running and get rid of that old oil. It's not old but it's polluted dangerous. Let us know how it works out jason. Ride safe and have a great day thank you for watching all your support.

[@jasonshortphd]

@@TwoWheelRocco Yea, going to replace the petcock and then change the oil and filter again.

[@outlawknives7302]

Thanks for all you help man! My bike has never ran better!!

[@TwoWheelRocco]

My pleasure to help.. Any questions just ask thank you for your sub outlaw and watching. Ride safe and have a great

[@David-og7di]

Good video...thanks. All that petrol showering out when you removed the petcock was ME last night!!

[@TwoWheelRocco]

Happy to Help, Any questions just ask. Thank you for your Sub David. Ride Safe and have a great day.

[@vdutkin8373]

Rocco, greetings from Russia, I hope you read it, thank you very much my friend, I have been suffering for so many days with the fact that my Sportster had a very rich mixture. I disconnected the vacuum line and gasoline poured out of it, thank you so much for your videos. good luck on the road my friend🤝

[@TwoWheelRocco]

Happy all went well. Those Petcock are notorious for failing, but they are good. Set up with vacuum operated. Thank you for watching and all your support. Vdutkin. Ride safe and have a great day.

[@chrisf6216]

Thank you TWR! One of your other great videos brought me here. My Shadow, previously running great all season (with a full tank of 91 oct ethanol-free gas, new air filter, new plugs, new battery since spring) died on me. Symptom was like it had run out of gas. Attempts to restart it fail except a couple of times it ran for 1-2 seconds, and then died again. I'm a novice, so much head scratching going on. I ordered a new petcock and so who knows. Thank you again - cheers!

[@TwoWheelRocco]

Happy to help. Make sure you take a look at your vacuum line from the petcock to the carburator. Sometimes they get old and collapse, or even disintegrate. Any questions just ask. Let us know how it works out.Thank you for watching all your support Chis. Ride safe and have a great day.

[@frankminneci2966]

Rocco is the best. He knows how to fix em !! Thanks again for all your help! Italian power buddy

[@TwoWheelRocco]

Happy to Help, Any questions just ask. Thank you for watching and your sub Frank. Ride Safe and have a great day.

[@caseycagle1444]

Hey Mike. This is Casey in Kansas. I'm going to get a Guage and test that petcock this weekend. Thanks again.

[@TwoWheelRocco]

I believe you have it all under control Casey. Petcock then test hose towards the carburator to see if it collapses, this will cut off your gas supply. That is the symptoms you have right now. if so, replace that too. Any problems just give me a call. Good luck and let us know how it works out.

[@bobsurette9780]

Thank you for this video! I have little to no knowledge of motorcycle mechanics and this helped me big time! I was lost about why my 06 sportster 1200 custom died…. And low and behind it was the petcock!

[@TwoWheelRocco]

Happy to help. Any questions just ask. Thank you for watching and all your support Bob. Ride safe and have a great day.

[@StoneRunning23]

Great how to videos! For a non mechanic like myself who has some basic knowledge your video does wonders! Thanks man!👍👍👍

[@TwoWheelRocco]

Happy to Help...Thank you...Have a great day.

[@geraldscott4302]

There is a black rubber washer that goes between the screen and the petcock. It will leak without that. I always replace that screen along with the petcock. See how brown/yellow that one is? A new one is white. The reserve tube is built into the screen. It's a very cheap part, and they tend to get brittle after a while being always soaked in gas, especially with ethanol gas. I put just a tiny bit of oil, or WD-40 on the tank and petcock threads before putting everything back together. It helps prevent galling of the threads. The petcock is not that expensive, but the tank is. In fact you will likely never find another tank that matches your original. H-D no longer makes new tanks for carbureted models, but even back when they did they cost a fortune. I also completely remove the tank and turn it upside down to pour out any remaining gas. Then I lay it upside down on a soft towel or blanket while working on it. I'm a mechanic at an independent Harley shop. We do better work than most dealers, and charge less for it.

[@TwoWheelRocco]

Happy to read all is well. Thank you for info and your sub Gerald. Ride Safe and have a great day.

[@shovelhead56]

Thank You for that heads up🤙

[@johngerardi2203]

Rocco Thanks, my vtx 1300 was leaking gas into the crankcase from sitting you told me to replace the petcock diaphragm and change the oil, running good again I guess all the oil and gas in exhaust will take a little time to run out thanks a bunch

[@TwoWheelRocco]

A couple heat cycles and she will be like new. Happy all went well.

[@johngerardi2203]

Your a class act thanks a ton

[@johngerardi2203]

Any suggestions on some corrosion in tank?

[@TwoWheelRocco]

Apple cider vinegar, Remove petcock. plug up petcock and fill 1/3 up rotate tank on each side. takes about 3 to 4 day. slow but works great. then treat tank with coats tank liner. I found the plugs at ACE hdwe. Hope this helps. I have done this, works great. Let us know how this works out.

[@jamesdeitz1627]

Thanks Rocco my dyna was running rich out of the exhaust my petcock is new when I turned my air fuel screw I turned it in a 3/4 turn and the smell and hesitation cleared up thanks I love what you show and is really helpful thanks ....

[@TwoWheelRocco]

Happy to help. Most times 1 3/4 turns out on the air fuel screw is the sweet spot. Thank you for watching and your sub James.. let us know how this works out. Ride safe and have a great day. Or I should say stay warm.

[@tml1310]

Hey Rocco, ended up draining the tank to check petcock pressure after you referred me to this video. Everything seemed fine, put new fuel in and bike started up no problem. Guess I still had moisture in it despite adding stabilizer and seafoam before winter storage. Either way, thanks so much. Because of your videos I now have a clean carb and new spark plugs.

[@TwoWheelRocco]

Happy to help....Ride Safe...

[@StoneRunning23]

Oh hey thanks! I am diagnosing my '06 883, been sitting in the garage for several months.. last year you helped me rebuild my carb! Having prob starting again. Cranks, but doesn't start.. I'll figure it out soon enough! Lol.. have a great day!🤗🤗🤗

[@TwoWheelRocco]

Check vacuum line from carb. to petcock....If all is well then diaphragm in your petcock...I like to spray some gas in throat of carb and try to start....If she starts you know its a fuel delivery problem..check petcock and screen in tank..Hope this helps..Let me know how this works out.

[@crackerjack8115]

What if your petcock has no vacuum line? My carb has the 90 with a screw plugging it. Guess petcock has been replaced with aftermarket parts

[@mw-dc1by]

Bought my Harbor Freight vacuum tester today. I get the Harley next week. First thing I'll test!

[@TwoWheelRocco]

Good luck with the new ride.....

[@billmeloche4918]

Thanks so much for your advice and tutorial 👍 I'm taking my tank off 2 b painted, so I'll b putting a new one in and changing vacuum line... APPRECIATE your help! Thank you

[@TwoWheelRocco]

My pleasure. Let us know how it all works out. Ride safe and have a great day.

[@Nifilheimur]

Should there not be a hissing sound coming from the petcock from air being sucked in? been having issues with my bike running like crap and cant find anything wrong with the carb or intake manifold.

[@TwoWheelRocco]

No there should not...Test with vacuum pump. If it can not hold vacuum its bad. Hope this helps. Thank you for your Sub. Any questions just ask. Ride Safe and have a great day.

[@Nifilheimur]

@@TwoWheelRocco it can definitely not hold vacuum as i hear it hissing. recently bought the bike and i suspect previous owner has "modded" the petcock as fuel flows freely with the engine off. So hoping this is the cause of my issues. Awesome channel and thanks for your help!

[@TwoWheelRocco]

Yes it will. How did the vacuum test go? Petcock is a dealer part. $35 Harley and buy a new screen those are the two most important things to start with clean fuel clean tank proper Petcock. When you have a vacuum leak that means fuel is being drawn into your intake and causing havoc... Let us know how it works out and thank you for watching.

[@Nifilheimur]

@@TwoWheelRocco I took the vacuum line off the petcock and it flows fuel just as well. plugged the vacuum line and went for a test ride. still coughs and dies when it gets warm and after i run at a constant speed for a mile or so or if i go downhill for a bit with enginebreaking. if i dont run it constant or use enginebreak it runs normally. totally baffled.

[@TwoWheelRocco]

You have a bad diaphragm in the Petcock you need to rebuild that Petcock a dealer item $35 or so. Do it and your bike will run great, let us know how it works out.

[@stevenlynch7300]

Aloha again, and I appreciate your diligence with my issue(s). Yes, the seat was cleaned with q-tip. Brand new screen was installed with petcock. Yes, there was rust in gas tank and at the bottom of the carb. Tank was drained to install petcock and rust removed. Also, rust was removed from bottom of carb. Tubes and hoses are fairly new! So, nothing else to check or is the cause, except for some possible debris that might have gotten in the needle valve/seat area? If not I'll tear apart the carb again.

[@TwoWheelRocco]

Sometimes it takes a few shots at cleaning these carbs because the debris is so small. Ride safe and have a great day

[@matrox]

Would it make more sense to just replace the P/C and vac line on a 04' Sportster 1200C with almost 50k miles instead of renting a Vac gauge to test it? The bike starts fine then the idle drops after about 5 min, start to see a little black smoke out the pipes the wants to die a misses when I give it throttle. Always starts and runs fine when cold. Took carb off and cleaned it good. Would the mixture setting cause my symptoms. I never messed with my carb settings except when drilling out the screw cover when new. Bike ran perfect for almost 50k miles without touching the carb. So far I cleaned the carb, replaced coil, plugs and crank position sensor with no luck. I did notice my old plugs were fouled black and chalky even after I cleaned them, so they fouled quick just by idling. Also I just filled my tank up right after I noticed the issue because I was going down the road and it felt like I was running out of gas but still had a half a tank.

[@TwoWheelRocco]

AutoZone Tool rent program is free, Or just buy a new Petcock, tank screen and buy the vacuum line. Under $100 for sure. And you're done. Any questions just ask. I sent you the video that covers pretty much everything. any questions just ask. I would test it so you'll understand the system better. And that's pretty much what you wanted to do. know your bike. Hope this helps.

[@matrox]

@@TwoWheelRocco Yeh...I may as well replace it, 18 years old an almost 50k miles. Like I said, I replaced the coil, plugs, cleaned carb, readjusted, replaced CP sensor with no luck. No diag err. codes either. With my above symptoms...what are my chance this is the actual issue. I mean what else could it be?

[@TwoWheelRocco]

I work on these bikes all the time. Test the Petcock. end of story, you have no codes. It is a carbureted bike and the petcock is the weak link. Fix it and it will run like new. Let us know how that works out.

[@matrox]

@@TwoWheelRocco I check with my local HD dealer tomorrow to see if they have the P/C and vac line in stock.

[@TwoWheelRocco]

@@matrox they probably won't have none of that in stock. You'll have to order it. Let us know how it works out. I safe and have a great day.

[@scottk4233]

Thanks for making things simple

[@TwoWheelRocco]

Happy to help.Have a great day..

[@claudenoto5137]

Rocco, when you thread the nut on the petcock, do you bottom it out on the petcock before threading it into the tank? 06 1200C.

[@TwoWheelRocco]

Yes that does get tricky. Thread that nut onto your petcock, hand tighten.and then threaded to the tank with the screen and the O-ring. Then tighten with open end wench and line up your petcock to your tank. I hope that helped thank you for watching and your sub Claude. Let us know how this works out. Ride safe and have a great day

[@claudenoto5137]

@@TwoWheelRocco Thank you, sir. I just bought an 06 1200 Custom. No one believes it's 15 years old. It's that clean. I love your videos. Very laid back and straight forward. I save them for future use. The Sportster 1200 custom is a really nice model... Do you have any experience with the TC 88A fuel management system?

[@TwoWheelRocco]

@@claudenoto5137 What is it doing?

[@claudenoto5137]

@@TwoWheelRocco nothing. Would just like to see that it's dialed in. Been researching the settings. I put baffles in the V&H short shots. (Came straight piped). Seemed like it was running rich, so I backed the air/fuel mixture back a quarter turn. Seems a little better now . Time will tell.

[@brandonradosevich721]

Will a bad petcock other than running rich will it also cause it to not idle right?

[@TwoWheelRocco]

Yes..A bad petcock will have a bad vacuum leak. Test and check vacuum line from petcock too carburetor. Then I would look at carburetor. Idle jet or needle float jet dirty. Let us know how this works out.

[@matrox]

What do I look for if the Vac line is warn?

[@TwoWheelRocco]

Happy to help. The line will be soft and gummy. It collapse when your motorcycle Carburator is pulling vacuum, This will shuts down the Petcock. causing no fuel. Thank you for watching and your sub Nicky. Hope this helps, Ride safe and have a great day. Cheap to replace.

[@matrox]

My vac line has plastic conduit sheathing over the whole line. Looks like I will have to dig in and fish the whole line out to check it, because the conduits covering it. Since I have to take it out I guess I may as well replace it while its out. What do you think?

[@TwoWheelRocco]

If you unplug 3/16 inch vacuum line from your Petcock. if it was sticky and rubbery and it feels like it could collapse. replace it. Cheap fix. Did you test the Petcock. that's the important stuff. I hope this helps.

[@matrox]

@@TwoWheelRocco I found quite a bit of corrosion on my neg. batt. terminal. I will clean it in the next day or so. Do you think that could cause a shutdown after it heats up?

[@TwoWheelRocco]

@@matrox I don't think so. But it is an indication that you have an electrical problem. How old is the battery?

[@ALtheDoctorWho]

Hi Rocco I am looking at this (the link you sent me). The petcock is new btw but I am going to check it anyway. Go through everything. Coming to think about it I should have checked the new one. Thanks for the come back Rocco. c];-)

[@TwoWheelRocco]

It takes a minute and just check that off the list, the petcock is where we need to start. as you stated gas leak when started. Let us know how this works out.

[@harley9058]

Thank you for the link Rocco this was a good tip on my problem 👍👊

[@TwoWheelRocco]

Let us know how this works out. Any question just ask.

[@joaomariogafanha5752]

good video. Wow this seems easy enough to a no mechanic like me. Think im gonna try. Thanks a lot

[@TwoWheelRocco]

Happy to help. Just make sure you tested it with a vacuum gauge. They have a loan program at AutoZone it's free. Any questions just ask. Thank you for watching and your sub.Joao. Ride safe and have a great day. Let us know how it works out.

[@dalehagenson6542]

rocco .... i have 2001 sportster XLH that is leaking gas from the petcock area, i noticed that you left the screen in the tank when you pulled the petcock off the tank. i just ordered a new petcock from the dealer doesn't it come with a new screen ?

[@TwoWheelRocco]

No it does not, it's a $15 part, Thank you for watching and your sub Dale.. Any questions just ask. Ride safe and have a Great day.

[@luismauricio914]

Would this cause a leak from the petcock, and backfiring from exhaust?

[@TwoWheelRocco]

Yes it would. Gas will leak into your intake throw petcock vacuum hose. Test, if bad replace.. And she will run like new.. Let us know how this works out. Thank you for your Sub Luis. Ride Safe and have a great day.

[@luismauricio914]

@@TwoWheelRocco Thank you, Sir!

[@luismauricio914]

Thanks for the reply and the great video. My 01 sportster custom was running great. I left out of town for a week. Rode it today and noticed the petcock leaks only when it is switched on and bike is on. Began backfiring/afterfiring when the bike got hot. Hopefully changing the petcock will do it.

[@TwoWheelRocco]

Will run like new.....Let us know how this works out

[@johnblakely5992]

Rocco, Thanks for the video. I emailed you about my bike my VOES/carb issue. I ended up replacing the petcock. The bike is starting up, but the carburetor is still leaking a lot of fuel. Thank you again

[@TwoWheelRocco]

Happy to help. You will need to replace your float needle jet. Today's gas deteriorates the rubber seal which causes gas to overfill and come out the quarter inch hose on the overflow. I'll send a video. Any questions just ask Thank you for watching and all your support John. Ride safe and have a great day. Take a look. kzbin.info/www/bejne/aIfaqnmagqeCeMUsi=XUxcK07SxeqFQwmZ

[@johnblakely5992]

@@TwoWheelRocco Just replaced the needle jet with a rebuild kit I had. The float level looks just like the manual. Checked everything else on the carb and it’s all put together right. Unfortunately its still leaking gas out of the carb. Not sure what else to do at this point.

[@TwoWheelRocco]

@@johnblakely5992 The only way you get gas to leak from the overflow hose is with a bad needle jet. Or a bad petcock Diaphragm. Do not buy these cheap Chinese pieces. www.ebay.com/itm/371594860984?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D253675%26meid%3D8ffc819c0746435a8d1ca194d7ba70a7%26pid%3D101574%26rk%3D1%26rkt%3D1%26itm%3D371594860984%26pmt%3D1%26noa%3D1%26pg%3D4375194%26algv%3DPersonalizedTopicsV2WithWatchlistFeaturesAndTopicMLREnhanced%26brand%3DKeyster&_trksid=p4375194.c101574.m47269&_trkparms=parentrq%3A298bc9ca18a0aa3700de9169ffff056a%7Cpageci%3Af80d0875-42c8-11ee-ae37-ee1c8ae0bfdf%7Ciid%3A3%7Cvlpname%3Avlp_homepage. Hope this helps. I know it could be a pain, but you gotta be absolutely sure of the part. I've been down this road it gets frustrating. Cheap parts are all over.

[@johnblakely5992]

@@TwoWheelRocco ended up putting a new CV carb on that was in really good shape. Put new fuel lines and new vaccuum lines for the VOES on. Replaced the plugs, charged the battery. The bike starts up with the choke on but will die as soon as I push it in or dont give it throttle. I rode down the road yesterday and it died at a stop light without throttle. Not sure what else to do at this point.

[@TwoWheelRocco]

That be a sure sign, your idle jet is not working when the choke is pulled, you'll be able to ride your motorcycle the minute you put your choke in your cut off the extra fuel that the idle jet should provide idle jet is dirty. Clean, re-clean and hopefully it all straightens out.. kzbin.info/www/bejne/hqGXnWCwl7aWr5Isi=cW5LfJSnjK3dRd-G.

[@Charlesg1004]

Do the sportsters with fuel injection have petcocks?

[@TwoWheelRocco]

No they do not, They have check Valves that runs from the fuel pump in your tank. This video will show HD Duece check valve. kzbin.info/www/bejne/Y2rGqZirh8pnaK8. Any questions just ask, Thank you for your Sub Charles. Ride Safe and have a Great Day.

[@shovelhead56]

Thanks Man, appreciated the info!!

[@TwoWheelRocco]

Happy to help any questions just to ask. Thank you for watching and all your support Shovel head. Ride safe and have a great day.

[@denniskirby4727]

Should I use plumbers tape

[@TwoWheelRocco]

No when you tighten that bolt there's a rubber seal gasket that makes it gas tight it's not about thread sealer there's a rubber gasket in between the tank and the Petcock hardware. Hope that helps. Any questions just ask thank you for your sub Dennis. Ride Safe and have a great day.

[@rayjburkhart1752]

Thanks for your knowledge sharing brother

[@TwoWheelRocco]

Happy to help. Any questions just ask. Thank you for watching and all your support Ray. Ride safe and have a great day.

[@nofxwagon]

Great video! Have dry rotted vacuum hose coming off the petcock. What hose to replace that? Thank you sir.

[@TwoWheelRocco]

Happy to Help. 1/4 OD auto zone. or Ebay. Thank you for watching and your sub. Let us know how this worked out. Ride Safe and have a Great Day.

[@nofxwagon]

@@TwoWheelRocco greatly appreciated, from a new 2002 Sportster 883 hugger owner down in alabama. Again thank you sir.

[@TwoWheelRocco]

@@nofxwagon my pleasure

[@nofxwagon]

@@TwoWheelRocco like i said new, will fuel pour out if i just pull the line from the y connector and VEOS to replace? And you are a scholar and a gentleman. So appreciate your help, the zip tie on that dry rotted hose couldn’t last.

[@TwoWheelRocco]

@@nofxwagon diaphragm on your Petcock has failed. there should be no gas in that line.Diaphragm has failed letting fuel pass which causes a rich running motorcycle or no running bike. replace the diaphragm on the Petcock it's a dealer part you have to buy that section of the Petcock to replace it. test your petcock. kzbin.info/www/bejne/bXfSaoRvaLR9jqs. let us know how this works out.

[@frankgrande6274]

I don't think my 1990 Softail has a petcock with the diaphragm. But it still leaks will it still affect the bike runing smooth? And also I have to keep adjusting the carburetor or she'll run low?

[@TwoWheelRocco]

I would check all fuel and vacuum lines. And make sure you don't have a vacuum leak at your intake and your carb seals. Think about this if it leaks fuel then it can suck air when you are rolling down the road. It will affect the running of a bike. Any questions just ask, Thank you for your Sub Frank, Let us know how this works out. Ride Safe and have a great day.

[@frankgrande6274]

@@TwoWheelRocco thanks Rocco

[@michaellopez4572]

On my 2000 sportster xlh 883 the petcock is leaking from the little whole that sits right behind the fuel line, I can't seem to figure out why. Any chance you might know what's wrong?

[@TwoWheelRocco]

diaphragm is bad in your petcock. Replace Petcock dealer part $35. Let us know how this works out. Ride Safe and have a great day.

[@johnhancock-h6h]

The vacuum at my petcock has no vacuum. Any suggestion? Gas will not go thru valve, but will if I place a vacuum on the valve with a vacuum pump.

[@TwoWheelRocco]

Backtrack and find the hose that comes from the carburetor and goes to your Petcock. And there's your problem.

[@bradyelich2745]

Used to be able to get a new diaphragm kit and don't have to remove the petcock. Just turn the petcock to have access to the 4 screws. While you are at it, may as well replace the vacuum lines.

[@TwoWheelRocco]

Happy to help. It's not that bad, at the dealer $40 $45. And while you're at it tank screen. And yes take a look at the vacuum line. Thank you for watching and your sub Brad. Let us know how it works out. Ride safe and have a great day. Warm weather is coming.

[@bradyelich2745]

@@TwoWheelRocco 1996 xl1200s, i had problems with my bike cutting out at wide open throttle for a couple minutes. i deduced that at WOT, there is no vacuum to open the petcock and fuel bowl ran dry. So, after two replacement diaphragms, i just removed the diaphragms and operate petcock as manual one and capped the vacuum line. Off when stop, and on b4 starting. Yes, I run WOT for extended periods, at least for 90 miles as i need to refuel. If i ride hard, 35 mpg, if i lock throttle at 60mph, i can get 60mpg and that is 180 miles.

[@TwoWheelRocco]

@@bradyelich2745 Thats better then most Sportster get. How did you block your petcock diaphragm?

[@bradyelich2745]

@@TwoWheelRocco I did not block petcock, i removed guts and operate it as manual. this has nothing to do with mpg, only WOT for extended periods. Mpg on Sportster is easy. Be gentle on throttle, stay out of accel pump. Lock throttle at 60 mph and cruise. I can get easily 50mpg, my Ex could get 60 mpg easily, cause she was so smooth on the throttle.

[@bradyelich2745]

@@TwoWheelRocco 170 main and 45 idle. both bikes.

[@bro.ken7777]

What size hose is the vaccum line, sir. I just watched the video. Thankyou sooooooo much.

[@TwoWheelRocco]

Happy to help that would be 3/16 ID vacuum line that's inside dimension.Thank you for watching all your support bro.ken. Ride safe and have a great day.

[@ChevyTechMN]

What are your thought on switching to a manual Petcock vs Vacuum on my 06 883.

[@TwoWheelRocco]

Happy to help. I would stay with the vacuum operated one. It's not that expensive to replace that vacuum unit. I'm like vacuum Petcock because then you never got to worry about turning gas off or on. Which is a big plus if your carburetor starts to leak, you will not be putting stress on your float because without vacuum you cannot flow fuel to the carbureto.r That's the upside. Thank you for watching and all your support Sam. Let us know what you think. Ride safe and have a great day.

[@en1gmafr0st]

Would a bad petcock be easy to diagnose let's say if you fuel up the bike then it runs really rich with some lower than norm rpms and some black smoke. OR when you put the kick stand down it bogs a bit with small puffs.

[@TwoWheelRocco]

Video shows you how to test the Petcock. it needs to hold vacuum and the tank needs to be clean of rust. Watch the video please.

[@danielmajeski3307]

Hey. I have a 01 Sportster. It seem to wanna leak sometimes. Sometimes worse then other times. My line that runs from the petcock to the carburetor is dry rotted a little. Could that be why it’s leaking or does it need a whole replacement? Thanks!

[@TwoWheelRocco]

Happy to help. Sounds like you have a Fuel Line failure replaced the fuel line inlet on your carburetor. I will send you a video on it. Thank you for watching and all your support Dan. Ride safe. Have a great day. Let us know how it works out. kzbin.info/www/bejne/fXmbcmZ6qM-jm6csi=1_-fHighqgMGbeT5. Ebay $10 apart probably 20 now. The vinyl gets a hairline crack and as it warms up it tends to leak it will get worse fix it. It is an old motorcycle.

[@AJV4L2007]

So question please sir, That vacuum line from the bottom of petcock. Does it connect all the way over to the carb?

[@TwoWheelRocco]

Yes it does, It tees off of your carburetor. Let us know how it works out.

[@AJV4L2007]

Hey friend, I’ve probably watched every video on your channel and it’s helped a lot, However this one has me stuck, I have the vacuum hose coming off the carburetor however on the petcock I don’t see anywhere to hook it. Mine is different then yours I’m not having any luck. It’s a 1995 1200 sportster

[@TwoWheelRocco]

@@AJV4L2007 If it is a HD vacuum petcock this is what it will look like, www.ebay.com/itm/97-Harley-Davidson-XL1200-XL-1200-Sportster-Gas-Fuel-Valve-Petcock/312841717710?hash=item48d6d1c7ce:g:6E8AAOSwbHpdybiQ. If you can send me a cell number. And I will call you AJ.

[@PatrickFox-j8h]

I just picked up an 04 1200C filter completely disintegrated. I got about 2 cups of rust and sludge out of it . I religned it with POR 15 and putting in an aftermarket petcock without vacuum I rebuilt the carburetor(it was gummed up from rust,and I think what was left of the filter

[@TwoWheelRocco]

Happy to help. Any questions just ask let us know how it works out. Love those sports. Thank you for watching and all your support Pat. ride safe and have a great day.

[@rickywelch5416]

Just replaced my petcock on my 2000 Sportster 1200 xl custom had the old one in this video on it and swapped it for the new one you put on here. For some reason it not releasing fuel out of the petcock in on or reserve position. Could there be a plug in the petcock from the manufacturer? What else should I check?

[@TwoWheelRocco]

Happy to help.There is no plug in an OEM reserve set up. I would remove the Petcock and test it with air. Switch it to reserve an on and make sure you have it on reserve. 6 o'clock is reserve and on 12 o'clock on your Petcock Gas. so you might have the switch in the wrong spot because there is an off. Take a close look Thank you for watching and your sub Ricky. Any questions just ask. Ride safe and have a great day let us know how it works out.

[@rickywelch5416]

@@TwoWheelRocco Thanks Rocco! I will be working on it today and will update!

[@TwoWheelRocco]

My pleasure Rick. Let us know how it works out.

[@TheHelirius]

Sup can bad petcock make me use more fuel than normally , Because I do only 70/80km for 12L gas tank :( So I’m thinking to change it any way if you have a link for 883 xlh 2000 (1999) with VOES pls ?

[@TwoWheelRocco]

Happy to Help, Test your petcock that it holds vacuum. VOES really ever fails.. Thank you for watching and your sub Mathias . Let us know how this works out. Ride Safe and have a great day.

[@doschichis2735]

I have the petcock rebuild kit. Will that help with a vacuum issue or should I put a new petcock replacement in? I have a 97 1200

[@TwoWheelRocco]

Happy to help. Is this one from the HD dealer That has the replacement diaphragm with your replacement petcock. If it's not from the dealer it's not the OEM replacement petcock. How much was it? Thank you for watching and your sub Dos Chi Chi's.. Ride safe and have a great day.

[@doschichis2735]

@@TwoWheelRocco I’m not entirely sure. I believe it’s the original petcock and I bought a rebuild kit from a aftermarket store called konquers near the Harley dealership. I’ll take a wack at it and if my problem persists I will go grab a new petcock from the dealer. Thanks for the reply.

[@TwoWheelRocco]

@@doschichis2735 sounds like a plan. Let us know how it works out. Ride safe and have a great day.

[@knighton7431]

Hi Rocco 97 xlhc sporster I took the petcock off had it tested it holds pressure. I replaced the fuel line it's original. After assembling it back together, I noticed it was leaking from the hole on the petcock below the vacuum line tip. So I'm assuming the diaphragm is bad?

[@knighton7431]

Yesterday I had a full tank of gas and I noticed that where the petcock and hose meet it was wet. The whole tank ran dry before I did anything.

[@TwoWheelRocco]

@@knighton7431 I agree Petcock Diaphragm is bad, it's a very common problem with the fuel today ethanol. That's a dealer part and you will resolve your problem. Any questions just ask, Thank you for watching and your sub Tone. Let us know how it works out. Ride safe and have a great day.

[@knighton7431]

@@TwoWheelRocco Thanks for the quick reply Dealer has one $63.07

[@TwoWheelRocco]

@@knighton7431 You might want to get a tank screen unless yours looks good.. Let us know how this works out.

[@knighton7431]

@@TwoWheelRocco I got the petcock installed it came with a filter, mine was clean.Back on the road.

[@dondadda2011]

Roco can they clog? My bike died at 35 mph. Checked for spark have good spark. Good compression. Pulled the fuel line off the bottom of the petcock and with a 3/4 tank no gas is coming out of the bottom of the petcock. On and reserve position. Replace?

[@TwoWheelRocco]

The petcock works of the vacuum, your motor creates. As the video shows, you need to test it with a vacuum pump. You can rent one at your auto store. You can test this with out removing petcock from your tank. Sometimes the vacuum line get old and collapse. This is the small line that runs off the top of your Carburator to your petcock, this will stops your gas flow with a bad hose or diaphagm on your petcock. What year? how many miles on your bike? Let me know how this works out. Thank you for your Sub Donovon. Any question just ask.

[@dondadda2011]

It's a 1995 sporty xl1200 with 20k miles on it. I guess I'll check the vacuum on it and if it's good I'll go to the carb next. I just rebuilt the carb right before winter. I have been riding all winter in idaho. Just filled the tank. Rode 20 miles and got 6 blocks from my house yesterday and it died. But fuel should be pouring out of the bottom of petcock yes?

[@dondadda2011]

@@TwoWheelRocco if it's not supposed to with a good petcock and it's holding the gas in. Then I'm assuming it's somewhere in my carb. At least I know it's fuel and not electrical or mechanical.

[@TwoWheelRocco]

Your petcock works off vacuum...1995 good chance Your need to rebuild your petcock. Dealer sell replacement valve for your Petcock for about $45 dollars. And your bike will run great. Test and repair. It will only flow fuel when you hook up to a vacuum pump to your petcock. This will act like you motor is pulling vacuum. Please watch the video. Any question just ask. Very common problem. Let us know how it works out.

[@dondadda2011]

Just cranked with the vacuum on the petcock fuel comes out I'm assuming petcock is good. Time to pull carb again I'll let you know what I find tomorrow when there's daylight. Thanks Rocco for all the good videos!

[@stevenlynch7300]

Aloha again, thank you for your help with a link to a Needle Jet Valve replacement for my Harley. It took you less than One full day to get back to me. It seems that maybe its a better value to buy a complete NEW Carburetor ? I've got a 1995 1200 XL Sportster, would you be so kind as to give me the links for a complete Carburetor replacement AND a Petcock for my model Harley as well. Again, here's a well deserved MAHALO ("thank you" in Hawaiian) to you and your very informative videos. Aloha and be well, Steven

[@TwoWheelRocco]

Problem is those replacement carburetors for $60 $to $130 Chinese copy are not that good, fix yours. Harley Davidson dealer parts needle valve jet petcock. that's what I would recommend my friend. let us know how it works out

[@potatoclipzgaming4008]

Are all Harley threads for the petcock 22mm? Know the nut is a 1” but what’s the thread?

[@TwoWheelRocco]

Hope this helps I will post a thread. www.google.com/search?q=Harley+Davison+Petcock+nut+and+thread+size%C2%A0&client=safari&sca_esv=247d501d47960c95&rls=en&sxsrf=ADLYWILymE7_QegD4exWu03WMdD8TIhVAA%3A1720013192189&ei=iFGFZq2eC5u-p84PheGpyAs&ved=0ahUKEwitgtG6_IqHAxUb38kDHYVwCrkQ4dUDCA4&oq=Harley+Davison+Petcock+nut+and+thread+size%C2%A0&gs_lp=Egxnd3Mtd2l6LXNlcnAiLEhhcmxleSBEYXZpc29uIFBldGNvY2sgbnV0IGFuZCB0aHJlYWQgc2l6ZcKgMgcQIRigARgKMgcQIRigARgKMgcQIRigARgKMgcQIRigARgKMgcQIRigARgKMgcQIRgKGKsCSNVvUM8FWJVicAF4AJABAJgBeqABxw2qAQM4Ljm4AQzIAQD4AQGYAhGgAvINwgIOEAAYgAQYsAMYhgMYigXCAgsQABiABBiwAxiiBMICCxAAGLADGKIEGIkFwgIKECEYoAEYwwQYCsICCBAAGIAEGKIEwgIIEAAYogQYiQWYAwDiAwUSATEgQIgGAZAGCJIHBDUuMTKgB7m0AQ&sclient=gws-wiz-serp questions just ask thank you for watching and all your support potato chip. Ride safe and have a great day. Hope this helps.

[@potatoclipzgaming4008]

@@TwoWheelRocco awesome! Thanks dude.

[@XPRESIDENTX]

Hi Rocco I have some sweating type of leak. over. the. petcock. bolt. otherwise. bike runs. fine. .. I noticed after I came back from a ride. and saw little drop or two on. my primary cover. unsure what to do can you advise? mike

[@TwoWheelRocco]

What year? How many miles?

[@mikedvd3187]

2005 17800 miles

[@TwoWheelRocco]

Re place petcock diaphragm. kzbin.info/www/bejne/bXfSaoRvaLR9jqs Hope this helps...

[@mikedvd3187]

thank you will do

[@TwoWheelRocco]

Let me know how it works out...Ride Safe..

[@tylercorcoran8553]

Hey Rocco, where did you buy the petcock valve? Can't seem to find one reasonably priced.

[@waterstreetpc]

1999 Road King that I did carb work on. I cleaned it as adjusted float. Still has gas coming out of carb. I installed a new carb and now gas is coming out of overflow tube and carb. It ran and started for few minutes but right after shut off it leaked same scenario. I have a manual petcock. Could that be the problem? How do you test a manual petcock?

[@TwoWheelRocco]

Happy to help. You need to replace your float needle jet as for your new carburetor. It could be just Chinese junk. Take your original Harley Davidson, carbureted and replace the float needle jet. Thank you for watching and all your support. You should never need an adjustment on your float, the needle jet rubber gets compromised by the ethanol in the fuel. buy a brand new one and your problem should be behind you. Ride safe have a great day just ask.

[@TwoWheelRocco]

Your manual petcock will not be the problem. The only thing that could go wrong with them is they leak from the Petcock.

[@woodsandwater644]

Still giving out here Rocco! I'm replacing my petcock but it seems the one I purchased doesn't have the vacuum line plug/nipple. I don't suppose this will work?

[@TwoWheelRocco]

Happy to help. If it doesn't have a vacuum line, make sure you plug that vacuum up that goes to the carburetor or your bike will run bad I myself I'm not a big fan of the cheap peacock that you purchased. I would return it and buy one that has the vacuum set up. But that's up to you. I will send a link for it. www.ebay.com/itm/125618579944. Hope this helps.

[@woodsandwater644]

@@TwoWheelRocco thanks for the advice You’re the best!

[@TwoWheelRocco]

@@woodsandwater644 My pleasure, let us know how it works out

[@woodsandwater644]

@@TwoWheelRocco your suggested petcock has saved my day! Rocco for president!!! Thanks for sharing all your knowledge! No more leak and got some mileage in already!! God bless Rocco ❤️

[@TwoWheelRocco]

Happy all went well. Thank you for watching all your support. Ride safe and have a great day and thank you for your kind words.

[@tomsmith2215]

Hey rocco you ever see a little bit of oil around the top of ta spark plug in the recess and behing it? I dont see a rocker box leak but noticed some moisture around and behind the plug. Thanks. Also, im going to replace petcock and gas line looks dry and a bit cracked...im thinking of replacing it. Do people reuse the line chaffe guard? and also a lot of replacement petcock for my 1999 dont have vacuum nipple for vacuum people say to just plug the vacuum line with a golf tee or screw...thanks i like your vids

[@TwoWheelRocco]

Happy to help. I would just rebuild the original petcock's with the vacuum operated Diaphragm. I find they work the best and yes, used chaffe Gard and copy the gas line routing. Any questions just ask. I'm a big fan of those OEM stock petcocks. just buy the rebuild kit from Harley. Not that expensive. You never got to worry about turning on or off the gas. Thank you for watching all your support Tom. Ride safe and have a great day. As for the oil. Just get it running. then you can worry about any oil residue by the spark plugs. One thing at a time that's the way I think.

[@tonee667]

Rocco love the videos Need some help, I just purchased 04 sportster 1200 XLC but I am noticing the bike runs like crap with the choke in, kinda feels like jerking at acceleration but it runs good with the choke out .. I was thinking maybe a fuel issue? I did cleaned the carbs but I have not pulled the tank out to check the filter or petcock.. idles fine with the choke in or out but when you accelerate choke in , runs like crap, jerking , spitting , as I ride it week power ..

[@TwoWheelRocco]

Take a look at your accelerator pump. .kzbin.info/www/bejne/oZrZmIGmj7x7m7s Look at part 17:35 on video showing pump needle. Any questions just ask. Hope this helps. Thank you for your Sub Tony. Let us know how this works out.

[@tonee667]

@@TwoWheelRocco its spitting fuel into the carb at acceleration so thats good . You think it could be the petcock? like I said the bike runs fine with the choke out ... Its just when you put the choke in at acceleration it you get hesitation when riding and also hesitating at idle acceleration like its starving for fuel .. fuel filter is clean , carbs clean , accelerator pump works ,its spitting fuel ..

[@TwoWheelRocco]

Sounds like dirty idle jet.. When the bike runs well with choke out tells me lack of fuel. Check idle jet and vacuum lines and petcock. Let us know how it works out.

[@caseycagle1444]

I don't have a valve Guage. Is there still a way to diagnose this?

[@TwoWheelRocco]

Let us know how it works out.

[@patricksowers8157]

Need help Rocco, 01 1200 sporty, replaced all vacum lines, petcock and rebuilt the carb. Bike starts up with choke on but as it warms up and i push in the choke it starts sputtering and dies. I have 48/185 for jets with supertrapp pipes. Any suggestions?

[@TwoWheelRocco]

Happy to help. If you push the choke in and the bike dies, that means you're idle jet is dirty. Clean the Idle jet. Then we'll take it from there. Thank you for watching and all your support Patrick. Ride safe. Have a great day. Let us know how it works out.

[@patricksowers8157]

@@TwoWheelRocco thanks, will do.

[@TwoWheelRocco]

Let us know how it works out. Petcock are usually the weak link and the only place to really start. If you do replace it, make sure you get a new tank filter.@@patricksowers8157

[@patricksowers8157]

The bike runs really well now, no coughs, spits or back fires. Thanks you @@TwoWheelRocco

[@TwoWheelRocco]

Happy to hear all went well. Thank you for watching all your support Pat. Ride safe and have a great day. @@patricksowers8157

[@dirtnap13]

i just put a new petcock that doesn’t have the vacuum hose on it and it still won’t get gas, any idea what might be wrong with it?? it could be my old tank

[@TwoWheelRocco]

Happy to help. Gas should flow freely when you operation replaced that Petcock you should be able to turn that gas on and fuel should flow. You need to take a look at your Fuel Line and inspect anything clogging it and do the same with your gas tank remove the hose and see if Gas will flow right from the tank freely and then take it from there. Any questions just ask. Thank you for watching and all your support dirt nap.. Ride safe and have a great day. Try it with the gas cap off the tank. Maybe the tank is not vented and causing a vacuum block just a thought. Let us know how it works out.

[@davidrojas3753]

I’m not getting any fuel to my carburetor. If the peacock is bad can it stop fuel to the carb ?

[@TwoWheelRocco]

Happy to help. If you're not getting Fuel to your Carburator test, the peacock for the Diaphragm to be good. Most likely remove the Petcock clean it and buy a new tank screen. Let us know how it works out. Any questions just ask. And yes, the dirt can build up and block fuel. Any questions just ask. Thank you for watching all your support David. Ride safe and have a great day..

[@mikeyjohnson6610]

I'm not getting a drop of fuel out of the fuel line is that the petcock?

[@TwoWheelRocco]

Happy to help. Petcock Diaphragm is failing. Notorious problem I will send you a video on how to test. kzbin.info/www/bejne/bXfSaoRvaLR9jqudt. first sign is leaking fuel.. Thank you for watching and all your support Mikey. Ride safe and have a great weekend.

[@beastwar4]

I just replaced mine. I put 93 octane in it when I got it 2 weeks ago just test driving. My screen was very clean but it was real easy on my softail

[@TwoWheelRocco]

Happy to read all went well. Any questions just ask Thank you for watching and your sub. Charles. Ride safe and have a great day.

[@mitchdanylchuk1242]

Hey Rocco. I"ve reinstalled the petcock exactly as described with a new filter, petcock and o-ring. I've tightened it twice and It's snugged up tight, but fuel is still leaking out the nut very slowly. Any tips? Great video btw!

[@TwoWheelRocco]

Happy to help. Readjust that nut so you'll have some more clamping power. Make sure you got a good O-ring and gasket in there. Thank you for watching and all your support Mitch. Ride safe and have a great day.

[@hunterpalmer5614]

I have an ‘89 sportster with a straight gravity petcock but when it’s turned to the off position, it stick trickles gas and causes an over flow. Any ideas on how to fix? Greatly appreciated.

[@TwoWheelRocco]

I would return petcock back to stock make sure your screen in tank is in working order. Replace needle jet and clean needle seat...on your gas float in carburetor..Let me know how this works out..

[@hunterpalmer5614]

Two Wheel Rocco ended up the previous owner had tried to clean the petcock since it was rough to turn positions and had put the valve back 180 degrees off so the positions were incorrect. Thank you for your help.

[@TwoWheelRocco]

Happy to help.. Ride Safe and have a great day.

[@babycammaz]

Where do you suggest buying a new one?

[@TwoWheelRocco]

Happy to help. I usually buy this at the dealership. Thank you for watching all your support. They used to be about between 40 and $60. Ride safe and have a great day.

[@maureenfoley1149]

I have a handicap cover over my petcock on my 86 heritage. So the on-off and Reserve all covered up. Please tell me if Up is on if pointing toward the front of the bike is off and if down is reserved?? Thank you Maureen

[@Isgood2beKing]

Hello rocco, i have a question I find out for months on the rigth side of the choke, the cylinder has gas on, after months become like a glue, NOW when the bike runs the idlle and acceleration is like a vacuum very rough, looking 8 can see from fuel line (bottom of the peacock joint the fuel line from the carburetor ) a can see the dropping of gas, as smell too. I thought was the gas line ,following your other video I stripped the "BREATHER BOLT". But i don't see the rubber crack or any hole, WHAT DO YOU THINK IS THE PEACOCK, cause is not a drop of gas from the carburetor side . I wish i see these video first, and save time and a striped bolt, Thank you in advance

[@TwoWheelRocco]

Test petcock with vacuum test, If bad replace. common problem. Dealer part $35 What year and model. Let us know how this works out. Thank you for your Sub Kratos. Ride Safe and have a great day.

[@Isgood2beKing]

@@TwoWheelRocco thank you for your response, Is a 2005 xl 1200 roaster, After the test , no hold, I replaced and thank to you also clean the carburetor, the bike runs super good, Little bit accelerate, o believe is when took the mixture screw (air gas) ,i did 2 turns from seat, but i gonna play to 1.5 turns , Thank you so much, you been super helpful ,

[@TwoWheelRocco]

Happy to read all went well. Thank you for your Support Kratos. Any questions just ask. Ride Safe and have a great day.

[@chewiescustompuzzles]

I just bought a new stock petcock for my Heritage Springer from the dealer, it cost 100 bucks. Where did you go to get yours for 30-50 bucks?

[@TwoWheelRocco]

Happy help. Things have change.....I got mine from the dealer... Mine was the diaphragm rebuild kit. Did you buy a whole new Petcock.? Thank you for watching and all your support Craig. Ride safe and have a great day.

[@chewiescustompuzzles]

@@TwoWheelRocco Yes, I bought a whole new part. That's Harley for you. They didn't try and save me money with a rebuild kit. Some dealerships just don't care. HD really stands for Hundred Dollars :)

[@TwoWheelRocco]

@@chewiescustompuzzles I Agree, They have a bad name. When it comes to parts and service. They need to change.

[@stevenlynch7300]

Aloha again, ok I've replaced the petcock and it still leaked from the overflow tube. Then I replaced the float needle valve. At first NO leak from overflow tube! But, after a couple of times of running the Harley '95 Sportster it started to leak gas again from the overflow tube again! What else can it be? Could it be a bad float needle or could it be mis-installed?

[@TwoWheelRocco]

Clean the float needle seat, With a Q-tip. Dirt is in the system and is causing havoc, make sure gas hoses are new or clean. all it takes a piece of dirt from an old hose to start this process over, you are right there Steve. you know you had it and then you started writing it make sure you have a screen at your pitcock. And is there rust in your gas tank?

[@kennylavay8492]

Rocco what is your thoughts on replacing the vacuum operated petcock with a standard non operated petcock ?

[@TwoWheelRocco]

Happy to help. I would buy the kit say $40 $50 to fix Petcock diaphragm from the dealer maybe $75 now. I keep everything stock the designed is pretty damn good. most carbureted motorcycles use this. Thank you for watching and your sub Kenny. Let us know how it works out. Ride safe and have a great day.

[@nickviles9207]

I don't have a vacuum line that I see. Could this have been pulled off without me knowing when I removed the tank

[@TwoWheelRocco]

what year sportster?

[@nickviles9207]

Two Wheel Rocco I found it on the carb which was disconnected and sitting in the garage....... I have spent 8 hours a day the past 3 days trying to figure out what the hell is going on. I'm a damn dummy. Your video still helped me out thank you buddy!

[@TwoWheelRocco]

If you can send cell number.. I'll see what we can do..

[@Dawgs241]

As always, wonderful video Rocco. If one decided to go manual petcock, what would you do with the vacuum line? I understand you would plug the carb, but what would go to the VOES? Merry Christmas to you, and blessings

[@TwoWheelRocco]

I would not go with any after market petcock. From harley the diaphragm and screen for your petcock is very reasonable. Turning gas on and off can be a pain with aftermarket petcock. They are not cheap for a good one. Now if you do chose too, just put a gulf tee in your vacuum hose on the gas tank side. Hope this helps. Let us know how this works out. Have a great Holiday/

[@halmorse5879]

I Changed mine But put the petcock on off Ran the bike till it used up the gas in line and Carb, then I drained the Tank first into a 5 gal container. then changed the Petcock. did have to raise tank and did not spill a drop of fuel....also...I always use a screw clamp on my Fuel Lines on Both ends....that way line stays tight on nipples and Vibrations and bumps while riding will not allow line to slip.

[@TwoWheelRocco]

How does your Sportster Run now?

[@paulst-pierre9131]

Hi Rocco Thank you for the Link here. Now do you test with the valve on, off or on reserve??? Thank you Pauly

[@TwoWheelRocco]

Does not matter, you're testing Petcock Diaphragm for vacuum. your motor produces vacuum that opens the diaphragm and lets the fuel run freely. don't matter, reserve off or on. you're testing the diaphragm for any vacuum leaks if there's a vacuum leak fuel can bypass the diaphragm and work its way into your intake causing a very rich running condition as in too much fuel. Any questions just ask. Hope this helped

[@paulst-pierre9131]

@@TwoWheelRocco Ok I think I understand now If the Vacuum is leaking fuel will get suck into the vacuum line and entering the intake burning up to much fuel and fowling the Plugs? Thanks stay safe out there.

[@TwoWheelRocco]

@@paulst-pierre9131 Yes.. popular problem with ethanol fuel, eats the rubber. Happy to help.

[@SosaMusik]

Amazing informative video, my bike shut off on me twice today and is back firing and bogging out, i think this may be the issue

[@TwoWheelRocco]

That is where you won't to start. Let me know how this works out. Thank you for your Sub Indigo. Any questions just ask. Ride Safe and have a great day.

[@SosaMusik]

@@TwoWheelRocco actually just found a dry rotted hose coming from the back of the petcock into the T splitter, was completely rotted and causing a huge air leak. Will replace all hoses first then give update, thanks again.

[@TwoWheelRocco]

She will be like new.

[@j.bridges2921]

@@SosaMusik Did the new hoses solve your problem?

[@mikeyjohnson6610]

Is there a gasket on this I can't find the gasket. Maybe mine doesn't have a gasket. 2006 1200c

[@TwoWheelRocco]

Happy to help. I have found that the Petcock screen that goes into the tank will act as your gasket to seal the petcock. Hope that helps. Thank you for watching and all your support Mickey. Ride safe and have a great memorial day weekend. Let us know how that works out.

[@mikeyjohnson6610]

@@TwoWheelRocco thanks I must be driving you crazy by now lol

[@TwoWheelRocco]

@@mikeyjohnson6610 Not at all. Have a great day.

[@krisriollano9830]

Hey, great video. Does that vacuum line run to the Vacuum Operated Electric Switch? Or straight to the carb? Thanks

[@TwoWheelRocco]

Yes it does, goes to a vacuum ignition.advance And vacuum petcock from the back right side of carb. Hope that helps.Thank you for your Sub Kris. Any questions just ask. Ride Safe and have a great day.

[@ALDProspector]

Do I need thread sealer for the new petcock?

[@TwoWheelRocco]

no

[@ALDProspector]

@@TwoWheelRocco Thank you for your time. Your help is greatly appreciated.

[@joshhansen9979]

Hey Rocco I have a 94 Sportster. It has been fouling spark plugs like crazy. We're talking within 2 miles they are black and full of soot. The bike has been running like crap. I have replaced the carburetor coil plug wires and plugs. My petcock valve I just noticed this is starting to leak out of the case. Do you think that this could cause those symptoms? Thanks for the awesome video Rocco.

[@TwoWheelRocco]

That is your problem. There is a vacuum line that operate your petcock, the diaphragm is bad, This will pull gas into your intake and foul out your plugs. Replace and inspect vacuum hose to. Let me know how it works out.

[@joshhansen9979]

@@TwoWheelRocco will do thank you for the quick reply Rocco. I just showed your channel to a few of my brothers. We love it. No BS just straight up knowledge and how to. You should have some new subscribers rolling in shortly.👍👍👍

[@TwoWheelRocco]

@@joshhansen9979 Thank you for your Support. Ride Safe and have a Great Day.

[@joshhansen9979]

@@TwoWheelRocco hey brother just wanted to thank you for your advice on that petcock valve. It fixed all the problems on my bike hasn't ran this great since I bought it. Rocco is the man.

[@TwoWheelRocco]

@@joshhansen9979 Happy to hear all went well.

[@antoniodangelo6069]

Hi Rocco I have a sportster 883 with the 1200 kit the bike don't idle when start to warm up and when it shutoff the muffler pop the bike also have the main jet 180 and the pilot jet 50 i think that the 50 it to big and there are 2 washers to the needle and just for this it run rich and shutoff and pop? Plus i tested like you said the petcock and it is bad and I need to replace it , i have an error code U 1301 do you think the code can be because run rich? Thank you....

[@TwoWheelRocco]

Get her running then we will see. .www.1130cc.com/threads/bus-er-u1301-b1005.263905/

[@antoniodangelo6069]

@@TwoWheelRocco hi Rocco I tried my friend main jet 160 with the 42 slow jet and the motorcycle idle only with the choke open, I put back the slow jet 50 with the 160 main jet and the motorcycle it's perfect now My main jet 180 it's Chinese with the needle holder Chinese I ordered for Harley the original needle holder and the jet 160 and 170 with 45 slow jet

[@TwoWheelRocco]

Let us know how that works. Thank you for your comments.

[@antoniodangelo6069]

@@TwoWheelRocco ok Rocco finally I installed the petcock she runs good with slow jet 48 , I found out she have Dyna digital performance ignition under the seat But still have the bus error after I start the bike the code is on P module is : U1301 On SP module is U1301 and U1255, What do you think? Thank you....

[@TwoWheelRocco]

No, This is a carburetor bike that does not have 02 sensors to read Air Gas mix. What is your bike doing?

[@trevorclark9737]

Hey Rocco I just had my carb done and my petcock replaced, but my sportster wants to cough when going a set speed, any help would be greatly appreciated, also great video, made the petcock a simple task

[@TwoWheelRocco]

What intake and Pipe.

[@trevorclark9737]

Stage 1 air cleaner and bassani sweeper

[@TwoWheelRocco]

Needs more Fuel, Raise slide needle, Bigger main jet, Should help. @@trevorclark9737

[@trevorclark9737]

Awesome thank you so much, I will try it

[@victorwest8041]

converted my stock petcock to non-vac by plugging the vac line off the carb and vac inlet on the petcock, also put the spring in the petcock in front of the diaphragm........it was stalling out at high RPM when vacuum level drops. I've read that this is a common modification, like going to an after market non-vac petcock, just remember to turn it off.

[@TwoWheelRocco]

Sounds like that would work. Let us know how it works out. Thank you for sharing and watching and all your support Frank. Ride safe and have a great day.

[@Mountdoom614]

I have read that it’s better to install a manual petcock once your vacuum petcock needs replacing. Less things that can go wrong in the long run. Do you recommend this?

[@TwoWheelRocco]

It is better to stay with the stock petcock set up. what year sportster do you have?

[@Mountdoom614]

Two Wheel Rocco it’s a 2002 sportster xl1200. The fuel line from the petcock to the carb has some gunk near the fittings so I am going to replace those lines since they are 16 years old now, figured I would do the petcock while I’m there. I see online a lot of people have been replacing the vacuum petcock with a manual and just plugging off the left over vacuum line. I’m assuming the logic behind this is that it’s a simpler mechanism and less can go wrong?

[@TwoWheelRocco]

Your choice... I would replace with new diaphragm kit at dealer for $32 dollars...or so....hope that helps...my reason...when motor is not running no free flowing fuel to carb...That can start other problems...I know you will shut off fuel........Bitch I forgot....cab. flooded garage smells like gas station...Ride safe and have a great day..Let me know how this works out.

[@Mountdoom614]

Two Wheel Rocco So I went ahead and replaced the vacuum petcock with a manual petcock. And yes, while warming up my bike before a ride it died because i forgot to turn the fuel on. Thanks for the advice!

[@TwoWheelRocco]

Ride safe and have a great day..

[@monkeyboss2321]

Could you do a video on replacing the fuel injectors on a Sportster preferably an 08 1200 custom. I've never had to do it before and will be attempting next week. As a woman I've never had to know how to do these things, but I enjoy knowing I can fix my own $hit.

[@TwoWheelRocco]

I will put that on my list, Two weeks or so. Thank you for your support.

[@jasedavids]

Rocco I messaged before I have a sportster with a sneeze issue have had the carb rejetted and the intake re sealed and still having issues with sneezing can petcock fix it?

[@TwoWheelRocco]

Happy to help. What bike? what jets? A/F screw set? pipe and air filter set up? Thank you for watching and your sub Jason. Ride safe and have a great day.

[@jasedavids]

@@TwoWheelRocco vance and hines short shot and cold air set up for filter no brand name I can see... its got a 160 main jet a 45 slow jet and I believe it's 2 full rotations on a/f

[@TwoWheelRocco]

Hope this helps, take a look at this video on a slide needle adjustment. it helps a lot in the transition from Idle to mid. Let us know how it works out. kzbin.info/www/bejne/fWK7dWOefdmqedk

[@hairball600]

where did you buy the petcock please, very hard to find.and Thanks for the answer.

[@TwoWheelRocco]

Happy to Help, That would be a dealer part $50 any place else not so good. Let us know how it works out.. Thank You for watching and your sub. Ride Safe and have a great day

[@fernandovenegas5374]

Hey Rocco, my sportster will start bogging out when I’m at full throttle. Can the peacock be a problem?

[@TwoWheelRocco]

Happy to Help, Test your peacock and check your vacuum lines, Sometimes the old vacuum lines will collapse and cut off vacuum supply..This will shut down slow down fuel. sounds like lack of fuel. Let us know how it works out. Thank you for your Sub Markus. Ride Safe and have a great day.

[@Gragnaniellozxy]

Hi Rocco, where I can buy that petcock? Thanks

[@TwoWheelRocco]

What bike and year? I'll look it up in the morning

[@TwoWheelRocco]

I will test it first and check the vacuum lines. I'll send you a link from eBay that should help you. www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=kawasaki+ninja+250r+petcock&_sacat=0

[@moosetron82]

Hey Rocco, so I've read through the comments and seen a few people have the same problem as me with spark plugs fouling with soot, and also issues you describe in a video about the bike not running right so it's led me to believe that my pet cock valves is not operating properly. I should also add that the bike was running but not very well, so I followed your video about cleaning the carburettor last week the bike started up and ran for about 2 minutes before the revs increased and then the bike stopped and i have been unable to start it again since. on closer inspection before taking everything to bits my petcock valve does not have a vacuum hose on the back so I followed the vacuum hose from the carburettor back through the engine and it goes to an electrical connection which I believe may be a "v.o.e.s", the bike is a 1989 883 sportster. do you have any advice ? can this switch be bypassed by adding the stock part like you or is this right for my bike to have this switch? i made a short video to make it clear .... kzbin.info/www/bejne/nYLZmaimjauHga8 p.s love your content.

[@TwoWheelRocco]

I would lean toward fuel. Leaned out, idle raise. No fuel and died. Squirt some gas in your carb. and see what happens. If she wants to start. Then clean tank, check tank screen. then clean petcock. That vacuum hose is plugged to your ignition advance. Let me know how that works out..

[@TwoWheelRocco]

That hose is your oil vent hose. After market, Hope this helps.

[@moosetron82]

@@TwoWheelRocco thanks , I will check all that and let you know.👍

[@moosetron82]

@@TwoWheelRocco thanks Rocco, I cleaned out the tank and used fresh fuel, she's running again. P.s just watched your latest video it is very comprehensive and covers alot of questions. You should get patreon I would subscribe to it, to say thanks and give back to you.

[@TwoWheelRocco]

@@moosetron82 Happy to help, Thank you for your kind words and your Sub. Ride Safe, Have a great day.

[@pierreloranger8167]

Hello, my name is Pierre. I just bought an old 2000 sportster and its in somewhat in not the best condition. The thing is that I got it started, but it only runs on choke. As soon I try to take the choke off, it stops. It wont idle even when its warmed up. Which part on the carburetor should I check first? And I really like your videos, its helping me a lot, thank you.

[@TwoWheelRocco]

Happy to help, need to replace your choke. I will send you a video. .kzbin.info/www/bejne/iXWncqBnZa5-hdk. Let us know how this works out. Thank you for watching and your sub Pierre Ride Safe and have a great day.

[@mudddog2264]

What up Rocco nice vid where'd you get that little handy vac from

[@TwoWheelRocco]

You can buy one at any auto parts store...or harbor freight...They are used to bleed brakes...Hope this helps.

[@mudddog2264]

Thanks brother I found them. hear another question would that stop gas from flowing if the diaphragm is bad

[@TwoWheelRocco]

Yes it could..you could have a bad vacuum line and that can cause the diaphragm not to function. stopping gas flow. Hope this helps.

[@vinsonwalton28]

Can you link me to the same tester used in this vid?

[@TwoWheelRocco]

They have a tool loan program at your auto parts store where you could borrow this hand held vacuum pump. www.google.com/search?q=vacuum+gauge+pump+suction&client=safari&rls=en&ei=OAXoYY6qHJeuwbkP5Yq7oAQ&oq=vacuum+gauge+pump&gs_lcp=Cgdnd3Mtd2l6EAEYATIFCAAQgAQyBQgAEIAEMgYIABAWEB4yBggAEBYQHjIGCAAQFhAeMgYIABAWEB4yBggAEBYQHjIGCAAQFhAeMgYIABAWEB4yBggAEBYQHjoHCAAQRxCwAzoHCAAQsAMQQzoECAAQQzoFCAAQhgM6CAgAEIAEELEDOgUIABCRAjoICAAQgAQQyQM6CQgAEMkDEBYQHkoECEEYAEoECEYYAFCmDFiLOmCiSGgCcAJ4AIABeogBhAqSAQM1LjiYAQCgAQHIAQrAAQE&sclient=gws-wiz. hope this helps.

[@vinsonwalton28]

@@TwoWheelRocco thx you’re the best