No more vacuum fuel pump problems! GY6 Won’t start: FIX! [PROBLD PULSER UNIT]

BUY IT NOW:
www.rollingwrenchdenver.com/p...
If your watching this video, most likely you have experienced vacuum operated fuel pump issues. For instance, after two weeks of the machines sitting or less in some cases. When you try to start the engine you nearly drain the battery before the engine starts. Bottom line is the small engine impulse / Vacuum fuel pumps have a lot of issues. We have the fix. This proved kit will upgrade your impulse or vacuum fuel pump to our electric fuel pump set up. Without the use of a Honda Ruckus ecu. This is a very needed upgrade for people that have purchased a budget GY6 wiring harness for their Honda Ruckus and isn’t utilizing a electric fuel pump.

[@tltmotorsports1158]

I want one where do I order

[@RollingWrench]

www.rollingwrenchdenver.com/products/probld-honda-ruckus-fuel-pump-pulser?ToPasteboard

[@totallylegityoutubeperson4170]

​@@RollingWrench how much longer till they're back in stock?

[@RollingWrench]

@@totallylegityoutubeperson4170 towards the end of the month :-(

[@totallylegityoutubeperson4170]

@@RollingWrench gotcha. I have a Chinese made GY6. Are these delete units exclusive to the ruckus or can they be used in a Chinese scooter with an appropriate pump? If so I will buy one as soon as they become available might even buy 2 lol.

[@RollingWrench]

@@totallylegityoutubeperson4170 this can be used an anything with a single carburetor. Boats, motorcycles, scooter, tractors… :-) so ya

[@keithkunik3229]

More knowledge from the guru of grom, the honcho of Honda and the master of mechanics!! Happy 🦃 day to you and yours!! Thank you for all the shared knowledge!!

[@RollingWrench]

Thanks for the support 🙏🏻💯

[@DirectorDavoPaul]

I love your videos and all the hard work it takes to make them. It's been so useful and pivotal for me. I'm riveted by your knowledge and your delivery style. With that said, I got a 150 Maddog a week ago, I have major plans...this is way down on the list but i was wondering if you could quickly describe what to do on an AC bike? I'd love a quick tip on how to install this on my maddog and the work around details for AC. Again, thank you for all your hard work, i make videos for living, i direct music videos for Sevendust and metal bands like that so i know the work that is needed for these, you are prolific!!! and aloha from Kauai!! you wouldnt believe the hoops jumped through to get a NEW maddog here, lolol. EDIT: I see you've answered this question below, it pays to read all the comments. The compliments still apply, Imma TRY and figure out what "tapping into the ignition wire" means, how to do it, then do THAT..:) Feel free to make a quick video on that since many of us do have AC to contend with! :)))

[@dimitriosstefanis9396]

Very nice and useful video! Thanks for sharing!!! Greetings from Mayorca Spain

[@alexmatos2407]

Thx for ur hard work.. can’t wait for ur turbo set to hit the market… I told me wife I’m saving for a new car.. 😅

[@FLmanvlogs]

thank you for bring up this video, i have the exact issue and never knew the problem. my bike has about 6k miles & i kept getting oil changes ever 1k miles & i just didnt know what was up.

[@harleyletts6925]

i had the same problem, fixed it with a primer bulb from a boat mounted under the seat been working perfect for a while. after it sets for a while just sit down give a squeeze or two then hit the starter and within a sec or two she's running. total cost..about 8 dollars.

[@RollingWrench]

Oh ya! That will work in place of this for sure as far as priming. It’s just big and bulky and ugly on a ruckus. But your still stuck with the unreliable pump.

[@MrZap773]

Did u interrupt the vacuum line?

[@RollingWrench]

@@MrZap773 yes, cap it off

[@MrZap773]

👍

[@grazz7865]

@@RollingWrenchthe accelerator pump on the carburetor is designed to prime it especially on cold starts.

[@dennychase_]

👍🏼🙌🏻🙌🏻glad they worked out for you Matt!

[@RollingWrench]

Check yaaa! 🙌

[@wednesdaytan225]

Yes these are all great new items I’m all for it! 👍🏼👍🏼 but for the ones who has the Mikuni fuel pump now they can blow on the gas tank to push the gas up to the carb to prime but who would want to keep doing that right so the easiest fix for this is installing a fuel transfer pump/manual pump on the fuel line between the pump and carb. You can buy the smallest one you can find so it’s easy to tuck away. Just another branch that people need to know if we’re about helping the community. More power to you guys Big Mike! 🍻

[@RollingWrench]

Ya. If you go that route get a jet ski fuel primer kit. That are small and the best choice for no clutter

[@Aldama5523]

Just ordered mine! I’ll make a video about it as well! 🙏🏽

[@croomcas]

Good Job my dude!! Good Job!

[@josequintero5476]

Great info bro thanks.

[@TSDsam]

SOLD! I'm gonna get one soon. My high rev GET runs the carb dry at WOT.... maybe speeding up the stock fuel pump pulse will provide the little bit extra fuel I need!

[@ch-ir8ld]

did it work?

[@mrjaybennett80]

That Ruckus is sick.

[@mikespain8655]

Fuel pumps are very reliable and rarely go bad.

[@sjjvddyumiherhv3709]

But how theu don't over fill the carburetor on idling? They are on all the time without the ecu can someone explain before i do the conversation

[@Trondeadlytron]

You’re the best !

[@jcasey2309]

Been following for years. Ever consider getting a Sur Ron and modding it? Feel like it’d be a great way to gain a huge following while helping the electric community as well with your knowledge and ingenuity. Just something to consider ✌️

[@RollingWrench]

Thanks for that dude. I do have something up my sleeve 🤫

[@gab7157]

Your video and explanation of operation is amazing. Thank u

[@RollingWrench]

Thanks dude

[@doe-zen-awf]

you should be proud! you did a cool thing!

[@RollingWrench]

I’m very proud of this :-) I appreciate you 🙏🏻💯🖤

[@Ranger-Al]

I have a 2005 Yamaha Rhino 660 that has the identical problem. This item would work for this unit also, correct? Thank you so much, great video.

[@petertorregrossa5457]

Awesome!!!!!! you are a genius

[@RollingWrench]

You are! For buying one :-)

[@MrBerenguer67]

Thks four your excellent video I have a Peugeot v clic is start today spilling gasoline through the tank breather whitch reason thank you so much

[@arronjohnston742]

nice! well done....

[@kirkvalera7760]

Can the vacuum help if you have a problem with the gravity fed carbs?

[@ricardoo3803]

I been checking some of your contents and I love them all. I just have one question. 1p61QMK engine those that means only a 61 mm bore kit works? Or how high can I go. 170cc 61QMK ENGINE I want to make it faster and I’m also looking to purchase the reveno clutch kit

[@knowyuhgrow420]

Nice product

[@mr.somebody1493]

Very cool.

[@zeebull]

If your carb bowl is full, then it'll start with no issue. Then the vacuum pump will have plenty of time to catch up. Another issue you're facing is the pump need to be pumping, not pulling. Mount it low, by the tank, and this is again a non issue. Also, try using a battery that isn't half dead.

[@RollingWrench]

Ya that will help a tiny bit. Or you can just make out with your gas tank. That will get the gas up to the carb every time like clock work. But it still doesn’t fix the over under fueling issues you get with these super unreliable pumps. At least this has been my experience. I hate them soooo much, I spent hours and hours creating this :-). But each your own. If like the vacuum pump run with it. Jest keep that battery charged up :-)

[@zeebull]

@@RollingWrench under fuelling? No sir. I've run taida 232cc full builds with the accompanying 32-34mm carbs with 0 issue out of mikuni DF44 vacuum pumps. I understand you're trying to peddle your wares here, but don't lie to people.

[@roycehan3213]

@@zeebull he isn’t lying. I’m running a taida 232 as well with a mikuni df44 and Im constantly having under fueling issues. Every now and then my engine embarrassingly sputters n shuts off while coming to a stop at a light. I have to “make out” with my vacuum line pumping fuel thru my entire line and pre filling the bowl till it’s full and there’s zero air bubbles in the line. Only then will my motor run at it’s longest before it always eventually under pumps and shuts off. I’m gonna buy this module and hope it’s a good as he says it is.

[@The411]

He's selling a product. Nothing will work but his product....... get it?

[@zeebull]

@@The411 oh, I get it, and I get why people do this. It's still slimy

[@2mickell]

Hey, Rolling Wrench I have a 2003 Honda ruckus and someone cut the Fuel Pump Plug off and just left the brass connector without the plastic cover over it. Do you have a feul Pump Plug or what should I do? Thanks, man, you've been a great help.

[@GoneRogue2022]

Awesome! Still waiting on that EFI unit Matt!!

[@RollingWrench]

It’s getting close! :-)

[@jamesbierman4935]

Me too...hopefull i can do that swap this winter

[@RollingWrench]

@@jamesbierman4935 I’ll need beta testers this winter

[@jamesbierman4935]

@@RollingWrench i am down but also in korea for another year....large ruckus/zoomer crowd here in military...just tell me what i need to do to be part of it

[@RollingWrench]

@@jamesbierman4935 I’ll do a post when I’m ready

[@andyproctor3588]

That is cool👍👍

[@NinoSpinner]

Come funzionano le pompe che hai detto che non vanno bene? Nel senso, si collega solo entrata benzina e uscita che va al carburatore?

[@Pneuma40]

Great video! Alternatively you could put the electric pump prior to the vacuum pump as a booster and wire it to the ignition switch, So it would come on and pump fuel to the carb on starting and then the OEM vac pump would take over during normal operation,

[@RollingWrench]

True, but no need

[@ARVintageCycles]

What do you mean no need lol that's better and way cheaper than what you're recommending 😅

[@ARVintageCycles]

Why buy that pulsar when you can just wire it to the ignition starter switch , it'll power it only when cranking over the engine and shut it off when you let off the start button , and you can either let the original vacuum pump take over or even better replace the og pump with an electric small constant flow pump and power that one to directly to the ignition switch

[@asadabdulqaabir4006]

@@ARVintageCycles Almost exactly my though. There is no sense in having that pump sending gas constantly at the carburetor while the key switch is on, carburetor eventually will overflow. That's why those pumps are commanded by the ECU, in order to activate or deactivate it when needed. Maybe if the pump controller is triggered by the spark signal... but flow-rate must be precisely adjusted. Or maybe if you add a second layer of control in order to deactivate the pump when the float valve closes. Dunno, this solution needs a little more thinking.

[@desertbound2005]

So it's basically priming the carb, like a lawn mower, but on auto pilot.... pretty cool design my friend

[@KlassyKlauman]

Could you upgrade a gy6 engine to the max? Then proceed to put it on your custom stretched Honda Navi?

[@jhonfenelon7409]

Can o use this part in a Honda pressure washer GX 390? Please let me know. Thanks

[@zigz9697]

how would i pump fuel into a carburetor i drained when my push start is broken? i have an automatic choke carb and a kickstart.

[@anonymously241]

Wao! 😲 Very nice product 🛵👍👍

[@shanemyers4142]

Have one on hyosung Aquila gv250. Tank is above the carbs. I have done everything to this bike and I mean everything. Carbs and all. Still dies upon throttle but it starts and idles perfect. I have to spray the carbs to rev normal. I have a feeling it's this vac fuel pump. It's my first one I've ever seen.

[@marcodm]

I have an 86 ski doo citation 250cc 1 cylinder. Pull start, many pulls before starts. No battery, only ac on lights. Can i install this with an ac,dc bridge rectifier?

[@deannagrayston4778]

So I have a 1986 spree Honda and it needs a crankshaft we're wold I be able to get one?

[@Texassince1836]

Those (vacuum) pulse fuel pumps are generally ran to the *crankcase* on riding mowers, not the intake. Constant vacuum does not power them. It needs to be cycled from pressure to vacuum to pressure to vacuum. Vacuum pulls fuel into the pump, pressure pushes it to the carburetor, and the cycle continues.

[@RollingWrench]

Yes that is true on a tractor. Unfortunately not on a scooter. However the intake pulses as well. In case you didn’t know.

[@Texassince1836]

@@RollingWrench The crankcase pulses from vacuum to pressure, the intake at low load pulses from strong vacuum to weak vacuum, and under heavy load the intake pulses from low vacuum to low pressure. The crankcase is a more consistent source of power for a pulse fuel pump, which would explain why scooters have such a problem with them while millions of tractors run just fine with pulse pumps

[@RollingWrench]

@@Texassince1836 what I’m trying to say is the scooters don’t have that option. The only breather hose is on the head. It can’t be restricted.

[@gianlucagiustiniano2525]

Ce una diversificazione quando il motore è ad bassi regimi o alti regimi?

[@Letsdothis21]

My Riding Lawn Mower has the Vacuum pump. The Tank is well above the engine and carburetor. Do you believe that the pump is actually necessary?

[@TACOMASRT5]

will this work for an arctic cat 400 with a vacuum pump?

[@walijumaat2158]

i have a Kymco Granding 250cc scooter, its not been running since July or August last year, and i just start to run it again yesyerday and today... and the issue i have now is when i go uphill it feel like it going to stall or dosent have enough power or gas running, what could the problem be? is it a power pump issue or what? it use the round shape power pump like onr u show in this video

[@Phieagles03]

@Rolling Wrench you mentioned selling gy6 171 already to go. How much is that?

[@ch-ir8ld]

just ordered

[@RollingWrench]

Thanks for the support

[@k1w112]

ACDC sounds like lucus the prince of darkness. God bless

[@tommybays7628]

Hey just wondering about the performance and whether this would work as a fuel 💉 pulse for a with a throttle less design if you incorporated a drive by wire ...sort of setup instead of your potentiometer the 3 wires from the electric throttle on an electric scooter .... controlled the pulse as you wrap the throttle ....to achieve this you would also have to use a stepper motor to actuate the throttle blade to matching the input of the pulse of the injector ... Drove by wire for a clean 👌cable free install ....

[@tommybays7628]

Also a potential draw back of your product ....key left on the fuel line blows off onto a hot 🔥manifold .....possibly catastrophe .... A way of detecting intake vacuum as in your demonstration you simply plug it off ....how about you incorporate an led inside your potted box an it indicates power and a safety if there is no vacuum from the intake system once the engine is running and vacuum is achieved 👌the led illuminates as indication of the operation using this as a method simply use a magnetic Reed switch very small and a neodymium magnet in its proximity or as it is removed from it enclosed inside a short piece of aluminum tubing and the switch turns on the module when the vacuum subsides the magnet relocks the normally open circut. Closing the fuel flow and when the vacuum is restored the led lights and the pump begins pumping again ....just a thought .... may save some lawsuits 👍👌

[@r.c.k.6403]

Ok so my 150cc icebear is shutting off as I ride it. Then won't start. It's like it just loses power, like it's not getting proper gas because I can feel it bucking a little before it goes down. Sometimes it has worked to blow through the gas tank to get fuel going again. I've replaced the carb the spark and numerous other parts. Any ideas? I need it for transportation and I'm broke.

[@davethornton9556]

i wonder if this could be adapted to an outboard motor that uses a small vacuum pump ? 94 mercury 75 hp 3 cylinder.

[@Daniel-lk3sy]

Same problem with lawn tractors that use a very similar vacuum pump system so your fuel is going back to the gas tank in about two days time and you try to start it 2 days later you're cranking for quite a bit before it fires off again!

[@RollingWrench]

Yes! I am very familiar. Need a pulser :-)

[@nathanielperez379]

What would have if I didn’t get that module and just had it wired in to ignition switch and just gave it the 2 psi the whole time. Running and idling , would it be ok. It would be just like a car

[@spencerguignet1210]

Sweet little gadget!

[@RollingWrench]

Thanks dude

[@danewert2306]

I have a 2009 Yamaha Rhino 450. Will this work with it? Thanks in advance Dan

[@jasonsmith3726]

Hey Matt I had a question about the reliability of a gy6 swap. If I go the gy6 route is that a motor that I am constantly gonna have to tinker with and fix things and all that just to keep it running or is it reasonably reliable as long as you keep up with routine maintenance and all. Also I just bought my first ruckus like 2 months ago. I have done a bunch of stuff to it already and I just wanted to say thank you because without you I would have zero clue on what to do with any of it. Everything I now know is from watching your videos

[@RollingWrench]

Thanks for the support Jason! If you purchase my stuff and put a good tube on it you won’t have any issues

[@dhoover4720]

Will this work on a 2004 Yamaha Rhino 660? Thank you

[@barrbr8610]

Good solutions for motorcycle that use a vacum pump..vacum pump kind like sucks...this is really a good inovation for old bike.

[@randykaminski6214]

Will this work on a stock Honda Metropolitan 2009?

[@ShandyBlairBlair-wz2ft]

Good morning sir I live in Jamaica hyryder Kawasaki 0811 can jet fuel pump apply to my bike also

[@stevenbouchie521]

Do you think that would work with a 2005 V Twin 750 Kawasaki ATV

[@jeremyhiskey4046]

Learning altot about gy6 engines from you. Was wondering if this will work with a tao tao racer 50. I believe it has a vacuum pump not quite sure, but having same issues. Have recently done an cc upgrade using pro build, from 49 cc to 80cc.

[@grazz7865]

The petcock on the taotao is gravity fed. The tank is placed higher which forces the fuel to go down. The vacuum attachment only opens and closes the petcock-that’s all it does. If it actually acted as a pump, fuel would be sucked into the vacuum hose. I have 2 of the same bikes (taotao pony 50s). I also did the 80cc upgrade-huge difference! Question-are your valves chatty with the 80? I adjusted my valves several times and still. I know it’s the valves because I did a test-I adjusted the valves to zero (tappet touching the valve head) and the sound went away. Anyway, the petcock on mine was stuck open (better than stuck closed I guess). I changed it to a manual petcock. Works just fine.

[@shaunvallerand3493]

So I have a gy6 50cc ice bear mad dog with vacuum problems so the pump doesn’t work well if I get this will I not need vacuum anymore

[@terrycolley6482]

Whilst I think this is great upgrade it should be noted most of the problems associated with el cheapo vacuum pumps are because of the use of ethanol fuel. Whilst most, not all, GY6 style engines can tolerate E10 fuel it turns the diaphragm in the fuel pump into a wibbly wobbly jelly like curtain instead of a semi rigid membrane that can 'pop' back and forth and so pump properly. Mikuni and Keihin vacuum fuel pumps currently made in Japan have ethanol tolerant diaphragms however, because ethanol also jellifies the non-metallic components of the typical CV carburetor (float needle tip, main diaphragm, air cut valve diaphragm, bi-starter seat) they don't work properly either. I use E10 with no problems in my cars and my motorcycles which are fuel injected but not in my scooters.

[@earlisfayette9061]

I just watched the video how's the pulser unit know if it's over fueling are under fueling the engine is going to use more when under a loud

[@RollingWrench]

The pressure from the pump fills up the float bowl. Once full, the flow is stopped inside the carburetor by the needle and seat. If it needs more, there is more on tap with the pressure behind it. We have done a ton of testing. All good, nothing to worry about on your end.

[@bejeps]

Bought one. Found out 2 wires on Maddog will turn off power when disconnected. The green and green/yellow stripe. I may have hooked up backwards. When turn on power running light came on but pulse motor did not? Did I fry it? Have purchased service time. Looking forward to figuring it out.

[@asadabdulqaabir4006]

Dude, I know this comment has a long time but hope this help you: the green/yellow wire is positive for stop light. You must seek for the solid brown wire that is positive for tail light. Any solid green is ok for ground.

[@schickmann]

figure a way to power this pump on my inverter generator. I got the same damn pulse fuel pump that takes forever to pump fuel up to the carb...this causes me to use the mouth trick each time and pressurize the tank to get fuel to carb.

[@katherinedacquel7371]

New subscriber from philippines can vlog a full video how to build a simple and budget meal gy6.. THANK YOU😊😊😊

[@rja8441]

Wait my gas tank is above the carb but is a vacuum bc I sucked on the vacuum line and it pushed fuel out.

[@MrHanowski]

These pulse pumps are actually very reliable and are widely used by experimental aircraft. It's not the pumps' fault that the fuel is low and needs to be pumped up to the carb. It's the pumps' job to keep the fuel flowing to the carb AFTER the engine starts, not get the fuel there to start with. To do that, use a primer bulb like outboard motors use. Also, the vacuum line should be as short as possible and made from stiff rubber hose, not long soft fuel line. If you use an electric pump, you must insure that the pump pressure doesn't exceed the rated pressure of the carburetor. Otherwise the pump will overdrive the carb float valve.

[@RollingWrench]

OMG! That’s is the scary! A vacuum pump on a aircraft!!! 😬. Sheeesh!

[@andyvaldez26]

I run that old cheap pump on a Lincoln electric ranger 8 generator welder, there are no taillights to hook up to so would this new device be wired straight to the battery?

[@RollingWrench]

12v that can be turned on and off.

[@youngfellabuilds]

Dose it work on 2 strokes

[@jeffmee763]

I wonder the cost to the Uk post thanks.

[@beldsx]

I have a 24mm diaphragm type, if I use of these, am i getting a problem like overflowing since it is pumping continuosly?

[@RollingWrench]

No, you can adjust it if needed. It’s only a 2psi pump as well

[@jdy5556]

Would this work on other engines that use a vacuum pump? Like my stupid boat motor? Seems like I could just get a pump and this unit, wire it in and go.

[@RollingWrench]

It will work as long as you o it have 1 carburetor. The pump isn’t strong enough for a multi carburetor set up

[@AGARCIA88]

Awesomeness! Just ordered mine! Where do you recommend I mount the pulsar unit? Also will I ever need to play with the screw on it?

[@RollingWrench]

Sweeet! Thanks dude. Mount the pump in the stock ruckus location and the pulser anywhere away from heat.

[@frankdove4869]

How much pressure does it put out? Could you put on a the regular electric fuel pump that's for an automobile but with low pressure?

[@RollingWrench]

The Honda pump is 2psi

[@rafaellastracom6411]

How about running a high-flow fuel pump directly into the carb with a low pressure (1-2 psi) check valve in reverse acting as a relief valve dumping back to tank and just let her pump to it´s hearts content.

[@RollingWrench]

You can do that too

[@barryjohnson4403]

Do you work on Atv motors or better question do you rebuild customer engines.

[@MortalityTechnician]

Sorry for the long post in advance: I have an oddball 49cc scooter (2012 Yiben MD50QT, currently saving for a Navi) I've been having a lovely time dealing with the same issues in the video, running clear lines you can literally watch the gas mysteriously vanish below the line to the pump over time. Replaced starter, spark plug, carb, checked vac seal and lines, and have gone through 4 pumps driving myself insane. Once I get it cranked, it takes a few minutes then everything is peachy. Unfortunately, the entire scooter except the fuel gauge is AC. I have 2 questions, first, would it be possible to split the fuel line from the tank to this pump/unit and splice in another directly to the carb, splice in a 12v AC to DC converter with a switch off of the brake light, so the pump activates with brake is applied to basically prime the system before starting? Or would this just not be worth the time experimenting and just plug the tank directly into the carb with an on/off valve, maybe a 1 way valve connected so it doesn't leak?

[@RollingWrench]

If the bike has an electric start there is definitely a dc wire to tap into. Check that first

[@MortalityTechnician]

@@RollingWrench Thanks. I figured there's something somewhere on the harness, but man, I just want to hit this thing with a crowbar.

[@RollingWrench]

@@MortalityTechnician the easiest wire to tap into is the key ignition

[@grazz7865]

First of all, the petcock is not a pump. It’s just an on/off vacuum controlled. When you start the bike, the engine starts a vacuum which pulls the valve open and fuel starts flowing. If the vacuum was an actual pump, fuel would be sucked through the vacuum hose. I proved this theory because on mine, the petcock was stuck open. I put a manual petcock on and it works just fine. I’m not 100% familiar with your bike, but most of the cheaper mopeds are all manual and basic operating systems (air/fuel/spark). The more expensive bikes give you computer control, fuel injection, etc so the computer makes adjustments as needed to keep the bike running smooth. In my situation, the bike is all basic. I did learn a good trick to keep it running smooth. I put a CAPFUL of seafoam with every fuel refill to keep the carburetor clean. The idle jet clogs on a regular basis. The idle jet has holes the size of a human hair and easy to clog. That means damn near impossible cold starts, stalling, horrible idling.

[@cravenmoorehead5636]

​@@grazz7865 you should start your own channel. You are one hell of a critic.

[@ernestzamarripa9192]

Do you build custom Ruckus for out of state (Calif.) Customers?

[@RollingWrench]

No. We just sell that parts and the how to videos

[@forestsandocean]

Do you think this will work on a 1999 skidoo 500cc snowmachine? It has a vacuum fuel pump that's hard as heck to start

[@RollingWrench]

If it has a single carburetor yes

[@Swerve_n]

When the carb bowl is full how does it know to stop pumping and pump again?ecu? interested in this but I need it to be reliable if I’m full hold sesh for a long run. Need one for my stroker dio my mikuni pumps been good on my other strokers but this new build won’t pull fuel thru the crankcase port only on my intake port but I don’t feel like that’s reliable..This might be my solution

[@RollingWrench]

It works just like your vacuum pump. Always pumps. The needle and seat in the carburetor stops the flow. Just like a flapper in a toilet works

[@Swerve_n]

@@RollingWrench which way do you turn the dial to make it pump the most?

[@LeDribFPV]

When the pump is not activated, does it block the flow of fuel? What I’m wondering is if I can use this on a gravity, fed fuel tank. Those vacuum operated pet cocks have always been very unreliable for me. I would love to just put a manual petcock on, and then essentially use this pump to stop the flow. If you open the bike is off, and then let it flow when the bike is on.

[@RollingWrench]

What up brother! How you been? You still rockin that Perrywinkle ruckus? 👌such a dope bike! To answer your question, unfortunately no. Fuel will still gravity flow with the pump off. I know what you mean, the diaphragm in those vacuum fuel valves are not very reliable. I think it is best just to install a free flowing fitting onto the gas tank and inline, install a 3/16 manual shut off fuel valve.

[@grazz7865]

I put a manual petcock on mine. The switch on the petcock stops the fuel flow. My vacuum petcock was stuck open (better than stuck closed I guess). The manual petcock works just fine.

[@hgvenom]

Hi, first of all ... Cudos for developing your on electric pump controller... My question is: wouldn't you be able to control and avoid over heat with a cheap pwm module for a DC motor?

[@RollingWrench]

Thank you. Maybe? Try it

[@AltonRowell-gb1lb]

I really believe you are trying to sale people on your products. I've never had problems with my equipment before. If it came with a vacuum pump then it was definitely should work.

[@RollingWrench]

Well yaaa! I’m selling a fix. I wouldn’t have wasted my time building a product that doesn’t solve any problems. Why would someone buy my product if they didn’t have any issues. The proof is in the customers problem. Once you start having problems and then install another vacuum pump and have the same problem again you will get it. If your not experiencing the issues I showed in the video you don’t need this product.

[@stephengalvan7722]

I've done everything you mentioned 😂

[@RollingWrench]

I appreciate your support so much dude 🙏🏻💯

[@Milenemo]

Does it work on a Yamaha 250cc Majesty? The all set, the pump and the pulse?

[@RollingWrench]

It literally will work on anything. I have people using them on boats, tractors and scooters

[@georgebowman9425]

This sounds like it would work on my brute force 750 I’m interested in the fuel pump also but I didn’t see in the link

[@RollingWrench]

www.rollingwrenchdenver.com/products/probld-honda-ruckus-fuel-pump-pulser?ToPasteboard

[@anthonyrobitaille8963]

If I have the same problem with a Vespa with the fuel tank over the engine. does a fuel pump will help me?

[@RollingWrench]

No, they are gravity fed

[@allancuddi8126]

I have a similar problem with a John Deere riding mower. Bad starting/gas flow in beginning. Could this work.. ? No brake lights.. but i have headlights.

[@RollingWrench]

Yes, just wire it to 12v. I have a lot of people using them on tractors

[@allancuddi8126]

Thank you!! My last mower was gravity fed. No problems. All of a sudden.. starting issues! Your video helped tremendously

[@todoapps3644]

Hey bro, I have a 150cc gy6 motor, If I want put a 170cc head and cilinder ¿Will I need to modify the crankshaft? or the 150cc crankshaft is compatible?

[@RollingWrench]

No need to do anything with the crankshaft. Just put our drop in kit in and go. www.rollingwrenchdenver.com/products/gy6-171cc-big-bore-kit?ToPasteboard

[@user-hs4ht5vp5t]

Got problem with Kiwasaki 23hp engine, I have replaced 3 FP's without success; ie, low volume after a few minutes. Will this pump delete kit supply enough fuel for the 726cc engine?

[@RollingWrench]

If it had a single carburetor it shouldn’t be a problem

[@Adrenalinspunk]

My question is how will this work with a smartcarb that has no over flow pipes. Also what fuel pressure is it capable of.

[@RollingWrench]

I have personally tested it on smart carbs. Works great! 2psi

[@Adrenalinspunk]

@@RollingWrench the reason I ask this is this could be a viable option for issues I am having with a smartcarb on a different set up not bike related

[@RollingWrench]

@@Adrenalinspunk oh ya! I have people using them on Honda 2T dio’s as well. They over fuel. This is the fix. Simply set the pulse rate to your desired flow… done :-)

[@xplay751]

The smaller gy6,(139qmb) carb has a mechanical acceleratior pump so normally in the winter I just twist the throttle a few times and it starts right up,the bigger carbs downfall is not having a mechanical acceleratior pump,it's ran on vacuum

[@reinerressel975]

Hi , your vac. Pumps installed wrong , look in the pump manual ! They must be higher then the vac. port and horizontal mounted, so that the drain valve is on the bottom , the let the condensation out . This Pumps are very reliable , if you install them according the manufacturer , and replace every year the diaphragm if you USA Pumpgas .

[@henc269]

What happen if there are too many fuel into the cab? Need to slow the pulser down?

[@RollingWrench]

Just turn the knob on the pulser to solve that

[@ernesttapia642]

Question do you think I can install this on 150 horsepower Mercury outboard engine? Mercury outboard engine

[@RollingWrench]

Ya, o have people use them on boats a lot. I’m not exactly sure on how they install them.

[@ernesttapia642]

All you need is 12-volt right

[@RollingWrench]

@@ernesttapia642 ya

[@andrewinsinga2993]

Hi can I use this on my 2000 suzuki king quad 300 4x4 atv the actual engine size is 284cc? I am tired of the vacuum fuel pump 😒 Thanks

[@RollingWrench]

Yes

[@jawnTem]

I have this issue, would work on my Garden Tractor?

[@RollingWrench]

Time to upgrade:-)