Why Your Motorcycle Only Runs On Choke | Dirt Bike Dies When Choke Is Off | Partzilla.com

Check out carb cleaner, carb dip, and fuel stabilizer here: bit.ly/bike-only-runs-on-choke
So your motorcycle won’t run unless it’s on choke. In this video from Partzilla.com, John will show you how this could be one of the symptoms of a clogged idle jet. We’ll take a carburetor apart and show you what you can do to clean your carburetor.
See how to clean a carburetor on a dirt bike:
• How to Clean a Carbure...
Check out out carburetor kits if you want to do a carb rebuild: www.partzilla.com/catalog/aft...
Talk to us:
Twitter: / partzilla
Facebook: / partzilla
Instagram: / partzilla

[@californiadreaming9216]

NOBODY HAS MENTIONNED THIS SO I SHALL: ON ANY VEHICLE, BUT ESPECIALLY MOTORCYCLES, THERE IS NO POINT IN CLEANING CARBURETORS UNLESS YOU ALSO THOROUGHLY CLEAN OUT THE TANK (DIRT/RUST + VARNISH) BECAUSE OTHERWISE CARBURETOR(S) WILL JUST CLOG UP ALL OVER AGAIN.

[@RiseOfPhoenyx]

Just restored my ls650 savage tank so I guess I’m on the right track lmao

[@Mikeofindy]

Great job explaining for the people that are learning!!

[@yaboysamshep1470]

Always great videos from partzilla

[@Cultureshockcrew]

Thank you for this great informative video! I have such a better understanding for how a carburetor works now.

[@Jerome____]

Appreciate for your informative video.. I've got a piaggio ciao 2stroke moped. today Ignorantly i filled the oil too to my fuel tank.. while back had running problem. Little that i knew it was the rich mixture+ some dirt in my carb.. i removed the carb and cleaned, but had the same issue.. worked only when chock is on.. so after watching this video I've poured fuel to my tank and filled up the carb with pure gasoline.. then it start working. Thank you so much.

[@Dirtyol12valve]

The dip usually works. Torch tip cleaners are great for cleaning jets.

[@cybexemoto6575]

Thanks for this video your the father I never had XD just saved me buying a after market carb for no reason!

[@daretowatch7214]

Useful and helpful information Thank you

[@davidreeves8037]

This is great had a bike with same issues and seen this and cleaned the same jet now runs a lot better than before 😂

[@PavanKumarHB]

Knowledgeably best sharing

[@wachofelix4560]

Awesome video...

[@FSAUDIOGUY]

My friend let his boat motor sit with dirty gas in it for two seasons. I took the carb off and cleaned it up and of course unstopped the main jet. I took it back to his garage and bet him a fishing trip the motor would start and idle after two pulls...he said no way, he lost! He jumped up and down like a kid that has won a new bike! Great Channel Subbed and T.Y.! :)

[@rideordie8822]

Any videos on drz400's? Great videos😎

[@massoudzadeh3394]

I love partzilla ❤❤❤❤

[@PABLOESCOBAR-ph3el]

HEY GOOD TO SEE JUAN TALLEY AGAIN. GOOD VIDEO.

[@kaidenrodgers6715]

I’m having this problem on a Honda 96 300 TRX it runs fine with the choke on but if your riding and turn the choke off it runs but when u come to a stop it quits

[@thelegend6935]

my crf250r started doing that recently

[@trailriders5186]

Same with a kfx400

[@trailriders5186]

@lucas tenere ramon thanks man for the advice but guess what it loose the air needle thats why was running like that but at the end i bought a new carb and when i took the old one off i just noticed that and just imagine my face like duuhh but how i gonna know that if i bought that kfx400 that was sitting on a storage for about a year so when i get it the carb was messed up,the throttle was stuck and when i open the carb it was very dirty and ugly with old gas on it so i fix the throttle i clean it up and was running fine first time then when i ride it again for second time it just start doing it so i guess when i ride it i took small bumps with it and i think it just came off by it self but thanks anyways man for take of your time to help me

[@youdarnneedaknow]

My 125 pit bike done the same I had to keep high revs so it didn't die

[@tristanpryll716]

How'd ya fix it

[@510arro]

Those glasses are sick though 😎

[@gucci_mario10coolguy78]

Having this problem on my 125cc pit bike hope I can fix it

[@chrispetersen8637]

I put a new carburator on my sportster. So none of the jets have buildup. Yet it only wants to run on choke. Any suggestions? Great video btw

[@kavieng333]

I had the same and yes the pilot jet was block thank you for that. However after cleaning the carb. I seem to now have a very high Rev with or without choke. Any idea?

[@ryankane7177]

I assume the same principle holds true with my 2 barrel 352 F250. I've been running her with the choke ever so slightly pulled out and even then the idle has been rough. I pushed the choke in all the way on my way home just now and she died every single time I let her idle. Is carb gunk where I should start looking?

[@FRANKLIN-vu1vn]

My atv 89 kawasaki bayuo is doing same thing so put new carb on and still not running when choke is turned off could it be air mix screw

[@vladimirsharapov9446]

Dimecsid. Good!!!

[@wtfbuddy1]

Nice video - can you show what the carb looks like after the dip?

[@brianburk2559]

Hey guys my name is Brian I'm from South Philadelphia I am the proud owner of a 2004 Yamaha YZF R6 and I was recently in a pretty nasty crash which involve a Uber driver texting and pulling out of a spot not looking and nailing me thank God I have my home in the ones or I would be a dead man and even with my homie I still had to have surgery on my head because I had internal bleeding crazy right?. Anyway my question to you sir was when the bikes laid it developed a small crack not in the crankcase but in the area around where the clutch cable is and it's leaking oil I put some of the J-B Weld steel stick stuff on it and it's slow. Then leak but didn't stop it and today I have the actual epoxy mix coming in the mail, my question is do you think that the epoxy mix and the JB Steel put on that crack will stop the leak? It's a very very very small crack I had to run it and actually watch it drip in order to find it that's how small it is but I also know that oil pressure when it's running is very high. I've been told by some people that I should look for a new motor which is out of the question it's it's a 2004.. what would your suggestion be in order to stop this leak number one and number two I've been noticing a drop in power when I rev it off the past maybe six or seven in first year and sometimes in second gear I'll give it throttle and it'll just die on me.... What do you think that could be caused by. I know you're a busy man any help you can give me would be much appreciated by this R6 owner Thanku! Brian South Philly!

[@bannanapancake]

I don’t prefer that chem dip, like to use MEK (as long as there is NO plastics or O’rings in the carb!! And only straight aluminum) as far as idle jets go?? And jets in general???Never give up on a jet unless its pitted and corroded.. I’ve cleaned many a jet with carb cleaner and a sewing needle.. those needles (depending) will go right through those little holes, prod it, spray it, prod it spray it.. most of them will be as good as new doing that..

[@knockyouout6996]

I have a 1983 CR 80 that I am rebuilding and I have rebuilt the engine and carburetor, it runs great at higher RPM but wants to bog and die when taking off unless I rev it really high. I have replaced the CDI and stator, I've tried rejetting and needle settings but I am wondering if I need a new carb or missing something else?

[@dougm.635]

ok what about if this happens on a brand new carb? Honda 400ex..does same, even little backfire before it quits

[@mtabby1]

I've just bought a yamaha aerox 101cc, fully rebuilt stage 6 choke installed and it won't run with the choke open... anybody know if this simple fix is gonna work??

[@barrytrezise8203]

Hi. I’ve got the exact bike with that carby. I put a kit through it and now when I rev it up it’ll rev up as normal but takes a long time to return to idle and sometimes it won’t return to idle at all. Can you help please.

[@michaelchoc7448]

I have a gs500 suzuki that runs on choke only I got a rebuild kit for it and it still runs on choke only

[@kings17court]

The problem I have is minor, but annoying, because it seems like something is not right. My XR250R starts fine cold -- sometimes first kick. Starting hot it's more difficult, and starts most reliably with half choke. What does that mean?

[@lmt-adventures620]

My Honda Fourtrax 250 has clear jets, cleaned it a few times and did the spray method as well as the light test method, all seem to be super clean having dipped it but still only starts to n full choke, and bogs after a minute even on choke and revs, but sounds better when spray starting fluid in carb as bogging begins. Any help is appreciated!

[@Tawmmy]

I bought a brand new carb and just right after I installed it on my bike, its not running with the choke off. Do you think it could be another issue or just check the jet?

[@sammydenalie2089]

Loved your Kawasaki klx 110 video! I was able to do a complete carburetor rebuild and its running great! I haven't had the same luck with my Suzuki dz-r 125. My problem: Bike only runs on Choke. I have looked at so many videos. Most videos lead me down the path of the Idle Jet. I cleaned everything on the inside with no luck so I decided to do a rebuild kit with NEW jets. Unfortunately, my issue still exist! What am I missing!?

[@lilgrkanthony21]

when you take the idle jet out use compressed air to blow into the carb additionally like he said in the video a carb bath or ultrasonic cleaner might be needed to break up stuff inside the carb you can't see

[@bunasir394]

My atv it’s shut down when choke on never running engine but it’s run when choke is off it’s that normal also sound like popping I also cleaned carburetor

[@davidastacio7754]

Have an ‘02 TRX 400ex, just changed the carburator and it still turns off, what could it be?

[@austinhatchull6246]

Would it be the same for a ttr 250

[@user-nd6mj7mt4o]

what could be the reason if I have a new carburetor and my bike runs only on choke ? The same thing?

[@SocalTankless]

I have this exact carb, it runs rough with the choke on but fine when choke is off, even run starting cold.

[@ninesixteengenetix]

I think your carb works fine lol

[@lostintheclouds8719]

Great informative video. I am wondering why a brand new Honda Navi w/ only 22 miles on it would not run with the choke off. I was told to run the bike with the choke on. the mechanic showed me when I picked it up, when they tried to turn the choke off while idling, it wanted to shut off and it was plenty warmed up too. So they just told me to ride it with the choke on but I know from operating my snowblower that when you operate anything with the choke on, it like floods the carbs and spark plugs. I’m definitely familiar with the old fuel because I’ve learned the lesson the hard way twice with my snowblower. FYI I am using a gasoline without ethanol as that was recommended in the navi community however the manual says to just use regular unleaded

[@Joeyyy28]

Did you ever find out what this was? Having a similar issue

[@lostintheclouds8719]

@@Joeyyy28 it took me a bit to wrap my head around this, but i found out that you’re spose to ride the navi w/ the lever pushed up all the way to the top. Apparently you’re spose to be able to start it with the lever pulled all the way down towards that arrow, let it warm up, then push the lever towards the top. My first ride with it, i did that. But then my 2nd ride, i did the opposite - i started it w/ lever at top, then ran it w/ lever at bottom. I remember i stalled and came to a dead stop on the road when i ran it this way. So i ended up putting the lever a quarter of the way down. I later learned i was completely running it wrong. Since then, I have installed a s23 variator clutch kit. This thing is so powerful, it starts up no problem, and i can run it with lever up or down BUT i was told the proper correct way is to run it w/ the lever up… so that’s what I’ve been doing and i haven’t had anymore issues. I can totally vouch for the s23 var/clutch kit that these things are completely necessary if you want to reach speed faster. These things totally give it more power, faster acceleration. Prior to install mine topped out at 55 on flats, with install, it’s hitting 60s on flats. My mech told me he got it up to 62 on a test ride. Hope your issue gets sorted out

[@putneg97]

small suggestion for you guys. i know you're using non-chlorinated cleaner there, but imo for the safety of viewers you should only use carb cleaner with gloves to give a good example. chlorinated version, the cheapest and as good if not better at cleaning than non-chlorinated contain very harmful chemicals that can seep through skin like Trichloroethylene (TCE) which cause kidney cancer and other bad shit. I only realized this after years of use as I'm not a professional and never thought it could be that dangerous so it could be useful for a lot of viewers imo.

[@bernardmoore3831]

I’m having this same problem on my 2021 KTM 125. I bought it new straight from a dealer and have tried everything. JD jet kit, trying all settings, dismantling the whole thing and putting it back together. Yesterday I rode with the choke on and it was way better. As soon as I turn choke off, the bike bogs out and dies.

[@jordannmejia]

Literally me too it’s the same year and model it’s an XC. Still gotta open it up tho.

[@gunsandhorsepower]

I just cleaned mine yesterday could it still be dirty

[@adoniscleosalleb544]

can you ship here in Philippine?

[@joeldagatan7604]

i was amaze in eye glasses hahaha

[@jamesreynolds5555]

Mine only runs on chock even with brand new carb ?? Any help would be appreciated

[@creationism08]

Did you get the problem?

[@stevieboy1823]

want to ask you that I have a 2000 gsxr600 , I completely clean all 4 carbs and still only run with the choke on only. Also clean the fuel filter, fresh gas. Has no idea why. Maybe you can help me out.

[@davidgriggs3967]

Stevie boy check your galleries that come off the jets .

[@oprxghost4859]

My carburetor is brand new the first time using it, it only runs on choke

[@philspaseo2377]

What if you have the opposite. My bike dies when choke is on. 07 vstar 650

[@allenupnorth2191]

What if you bike won’t start with choke on but will run fine without the choke

[@fuzzyanthony6398]

Mines the opposite of that, and I can’t figure it out

[@donovanbarker6448]

9 times out of 10, if your small engine won't start or stay running, it's bc of a dirty carb

[@silkcustoms520]

Good Lord, Whoever let’s their carb get that Dirty shouldn’t have a Bike.

[@356Drama]

I gotta question, my 49cc Chinese dirt bike only turns with the choke down and the throttle being held(this is after a fall,also probably mixed to much oil in this last tank I gave it)I’ve changed the carburetor,and spark plugs.still nothing , any idea what could it be?

[@tristanpryll716]

You fund out what it was yet??

[@eclipser2004]

ultrasonic tank for that one i think

[@purgefinx]

My pitbike 110cc runs with chocke and Off. but without it, it has like "limiter" 😅 but with choke it runs normally. and clutch is also broken.

[@johnniegarcia2820]

I ordered some things from your website and it said my order was delayed a couple days cause of the pandemic but it’s been weeks now. I was just wondering when it was coming in or when you guys was shipping it out? I have my confirmation code as well. Please let me know, Thank you!

[@killerbeau95]

Just oser through your dealer these places take forever

[@frankmiranda1352]

Mine only tries to start when the chokes off, has sat for 10 years

[@ncy614]

Mine does it with a brand new carb

[@jerodrobinson4040]

Hey guys, looking for a bit of advice. I have a 1982 Yamaha XJ-750 Maxim, and it will not idle without Choke. it also seems to be having a drop off in power at higher RPM's. I started off by replacing the Vacuum Petcock. Then cleaned out the carb jets. Then replaced the Valve Stem seal's and checked the piston rings which are ok. Nothing seems to improve how it runs. Any theroy's?

[@sammydenalie2089]

Hi Jerod, I too am having a problem with my bike. Won't run unless its on Choke. Did you ever resolve your issue? if so, what was the fix?

[@jerodrobinson4040]

@@sammydenalie2089 Yes, my personal issue was the Ignition Box/ECU. It was sending a weak spark to my Plug's.

[@jerodrobinson4040]

@@sammydenalie2089 But I highly doubt your Bike is having that specific Problem. Have you tried anything yet?

[@sammydenalie2089]

@@jerodrobinson4040 thank you for the reply. I took took out my air filter (which still looked brand new) and washed it, let it dry for 2 days, and applied some K&N air filter oil. Still having the same issue. I agree with you that addressing the ignition box/ecu is probably not my issue. but i will look into it. again, thank you for some direction and just for replying!

[@ron5454]

what if it's doing the same thing with a new carburetor?? We just installed a new one and it won't run with the choke off.

[@xrash2x]

Need to change the jets or u ran bad gas thru a new carb

[@laszloyolo292]

what if its not ur jets?

[@tychusenfieldlarsson206]

can I clean with wd40

[@micahchurch4915]

I put a performance exhaust on my 2004 Honda 300ex and now it won’t idle correct. Any tips why or what to do? Thanks

[@samstumps]

With the new exhaust your bike will be getting more airflow so you need to richen the mixture and if that doesn’t work you’ll most likely need to upsize the jets

[@Califamilymanprepper]

What if its a new carburetor

[@logancurran]

i put a new carburettor on it but it still does it

[@250ignacio]

Hi, im having a problem with my Honda CRF 250R 2007. It starts and runs very well but after some minutes (3-5 min or 250-500m aprox.) it shuts off and the engine dies just like if you cut off the fuel valve. Its exactly like when you forget to open the fuel valve and go riding, it just dies after a few minutes. I think its a carburator related thing, but I know very little about carbs. Do you have an idea of what it could be?? Cheers!

[@nickelmcgee8735]

Maybe adjust the float level on your bowl.

[@raydolinger1980]

Corn syrup gasoline we have to get nowadays... :)

[@alvin2894]

What if the bike cannot run on choke? My bike dies instantly when i pull the choke lever

[@JNC1973]

This can't be the issue causing my engines stalling when i turn the choke off because i have a brand new carburetor on it with the new jets that came in it. Has to be another reason. 🤔😮‍💨🏍☁☁☁

[@Dave-ve7ue]

I have a Coleman ct200u minibike. I was having an issue with the bike only running while in choke and then cutting off when I took it out of choke to run. I figured I'd just swap out the carb and be done. Well after I put a brand new carb on it I was having the same problem. I even swapped in a new spark plug. Any thoughts on it? Is it possible it's a ignition coil?

[@ericwallace1470]

Dave need a larger pilot jet

[@joshtidwell8554]

Me as well and I’ve cleaned the carb every spec of it about 7-8times if Anyone has the fix for this please post

[@FadedRust.]

@@joshtidwell8554 Did you fix it ? if yes then how - same problem

[@pewtorye]

Ditto

[@cuda4094]

What if it's more responsive with a little bit of Choke what does that mean

[@Sorrow217]

My guess would be your fuel to air ratio may be off. By giving it a little more choke would mean it's getting a little more air as well

[@dallanc5199]

Great video, what are you using for the dip? I've tried Chem-Dip but it makes the aluminum feel sticky, like the dip is reacting with the aluminum. Very strange, I didn't like the result. *Edit: Nm, I see the link to the Yamaha carb dip in your description now.

[@notredlinejunkey39]

My dirtbike will like drive, but every 5-10 seconds it bogs down and won't go for like another 3

[@kentuckyjustice1408]

I have a DR650. Recently, it started this thing where it occasionally dies when I stop. It'll start right up on the first try when this occurs. In trying to figure out what I could have done, I keep going back to when I ran a tank full of high test fuel through it, at someone else's suggestion. Maybe it's a coincidence, maybe it's not. That's why I'm asking for someone to point me in a direction. I'm all ears. 👂

[@TD1mkiddwest94]

Why does a dirt bike wheel spin and take off by its self after I start it up

[@mute9914]

Because it's not in neutral

[@s1dew1nd3r4]

I always wonder when these dudes refer to "sitting up for a while" how long is considered a while? a few months? 6 months? 12 months?

[@chuckwright2755]

When I start my cr250,it fires up but it will run like the throttle is pinned

[@charleshighlen611]

End up figuring it out? I have the same thing going on with my 01cr250 mine does the same only starts with choke on will die on it’s own or if I turn choke off it dies

[@charleshighlen611]

Not sure if floater stuck or air leak. I don’t have a test right now so trying to gauge from others where to start to save time

[@iceofautumn890]

Even on a brand new carburetor?

[@jamesjones4055]

I have the same issue with a New Yamaha brand carburetor that I bought from Partzilla.

[@iceofautumn890]

@@jamesjones4055 I have that "racing" carburetor with the blue air filter you get off of Amazon. Weird how it doesn't idle.

[@choppergirl]

Yeah, did all that a million times, does not fix the problem. Want some other answer that says its something other than the idle jet being clogged, because it's not. I can fill the idle jet well with solvent and it will siv right through it. Rebuilt this thing with new parts 50 different times, putting it on and off again, with the same problem. Only runs on choke, and stumbles when you twist throttle. It's not the idle jet.

[@neighborhoodgoons3200]

What if my bike is fuel injected????

[@boycottjews]

Then you dont have a choke? Injectors still get clogged.

[@Adam-zo6lc]

Need help on fuel injection only run on choke.

[@gabrielcastaneda5012]

My bike will only run with choke off. Does anyone have any clue?

[@bodendiel2172]

Probably running rich. Check air filter and compare jets to stock ones

[@jeffmcintosh209]

welp explains what happened, bike wont run off of choke has def been sitting all of covid and just now got her running

[@dylanlangston6668]

my carburetor is brand new and I’m having this issue

[@charizardsniper5064]

Yea same here what should I do

[@dylanlangston6668]

bryan plunkett - make sure your fuel and air mixture screws are set correctly - my issue ended up being a vacuum leak because the exhaust didn’t have a tight seal

[@jonathanmiguel4201]

@@dylanlangston6668 what is a vacuum leak?

[@MOE13576]

@@jonathanmiguel4201 it is when a certain amount of air bypasses the carb intake portion (manifold). Like when your carb or exhaust doesn't have an air tight seal( faulty gasket somewhere) or not sitting properly. So extra air gets in the carb making it function improperly( not running right). The carb is no longer like a vacuum that sucks air in just thru the intake tract(manifold)

[@gamingbluemoon]

Having this problem now. Choke all the way on and somewhat idles. Carb is CLEANED. all jets clear. Don't know what else to do. Edit: it's a bad choke cable. Replacing it soon but I confirmed it. 2002 Suzuki GZ250

[@edenmenastrees7226]

You should not be soaking your hands in fuel and chemicals...why don't you wear rubber gloves?