WHY your motorcycle only runs on CHOKE
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- čas přidán 19. 03. 2018
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Looks like I need to clean carbs on my 83 750 Shadow.
MatthewMCRepair Hey how much would you charge to rebuild a 1982 CB 750 carb totally tear down vapor blasted rebuild it or just the floats the whole 9 yards thankyoub
MatthewMCRepair hey brother sorry to bother you but i have a newer coleman ct200u minibike it runs only on choke and the bowl fills with gas i changed the oil recently i may have added to much oil black smoke comes out of my performance rlv pipe. Any suggestions would be thankful.GOD BLESS
Got a cheap Chinese pocket bike and had a simular issue, under load if randomly wants to flood and loose power, also when it is running pulls on idle so you have to hold the brakes on to keep stationary. I've change the whole carb and spark plug looks ok... Any ideas anyone... Thanks
My carburetor air and fuel mixture screw doesn't make any difference what the problem
MathewMcRepair good stuff!!! I've been working on small engines for about 8 months now and I've learned alot because of guys like you and I've combined my knowledge and skills with all the ideas and videos you guys load on CZcams and till today nothing but SUCCESS!!!! Thanks Dude!!!
Great video.
Been dealing with that issue for years, where things would only run with the choke on. Thanks.
Thanks for the great vid, was able to get my polaris 400 2 stroke running right again.
Dude, thanks. For how complicated carbs are to a newbie, this is a relatively concise yet informative video. Thanks for educating people on something the majority of people, even with mechanical ability, don't know much about.
Also, with all the road vehicles being fuel injected for the last 30 years, carb work in general is becoming a lost art!!!
Great video, That's exactly what I needed for my lawnmower ! Thank You.
Dude that was exactly what happened to my outboard motor.i fixed it after watching you video. I found some stuff clogged up the tiny little hole. I just blow onto it. Then I put in back and fire it up with just one pull. Plus no choke.
Yeah ! Thanks for the tips.
God bless you!
Carlos c
I had that problem and I followed your instructions and got my atv running perfectly ...thank you. greetings' from Athens Greece
Hey man thank you for this video. We have searched high and low for a weak and we were ready to buy a new motor. We watched videos that told us to clean the carb but none said to clear the debris from the jets. Much appreciated: MBX10 mini 🏍
Week*
Trying to revive a 99 Honda Shadow 600 CD2 that sat for 4.5 years. This is my problem. I've never cracked open a carb before. Good learning opportunity. Appreciate the guidance.
I find this solves 90% of peoples real problem. It is why it is front and center on my website. The problem is no one wants to have to take their carburetor apart. This is a good tutorial.
Thanks, Junkman. Yes, everyone wants to pour something into their tank to solve this problem.
I know, right? You can kinda get by on automotive carburetors, but these small engine carbs the "drain cleaner for your engine" just doesn't work.
Hi Matt, I recently picked up an 05’ TRX 450r. Can’t get it to start after completely tearing down the carb and cleaning it. All the jets are clean and clear, and there’s new gas. The spark plug looks new also. I adjusted the accelerator pump to get the best squirt. I can get it to briefly fire (about 2 seconds) after choking it then kicking it on half throttle. I have a feeling it’s either an idle screw or air/fuel screw adjustment. How do I adjust to the correct setting for those without hearing the engine while running?
Did you verify stock pilot jet? Can you see light through the pilot jet? Did you remove the fuel screw and clean the carb body pilot circuit? Hot start plunger clean and operating correctly?
Yea went through the carb like 10 times sprayed down the sides on the intake manifold tube with starting fluid and bammm it dies sure enough bad gasket to the motor
Thanks for an awesome instructional video on carb cleaning and assembly. You make things much easier to understand, I can't wait to get started on my Polaris 500 sportsman carb which currently only runs on the choke. I will follow up this post once I've gone through the carb. Thanks and stay safe!
my name is Dave your video was very helpful I just got done putting my carburetor back together and yeah the Jets were clogged I'm just waiting for some sealant to dry and it should be good you are a good man with a lot of knowledge thank you
No problem. What parts did you use sealant on?
Im a new rider and at first when i bought a used bike reble 250 i thought it was normal to run on choke... Until it kept acting up ended up getting it fixed at shop...now i know...great video
How much did shop charge to fix? 🙏
Thank you for this video. I just got done cleaning the jets on my DR650 and it idles like an a dream.
! Right on, same here. Except it was my idle adjustment screw? Cleaned everything else twice with different mechanics to no avail. Cleaned the screw out of boredom, FIXED!
Christian Fernandez you took the idle screw fully out and cleaned it and it works? i might need to try this
My ‘new’ 2008 Honda CRF230L....runs great now....without any choke.....easy fix after seeing your video. Much appreciated Amigo! Gracias.
Having issues with a Mikuni carb.......perfect video explanation. Thanks!!
My dad had a dyna wide glide anniversary edition. Before he passed, he made motorcycles a part of me. There are pictures of 5 year old me holding on to his belt loops on his bike. We still have her, but she has sat for 6 years. Only runs with the choke on. I will have to try this because I miss motorcycle rides, and I want it to run again. Thank you so much for this video💜
Isabella Vargas sorry for your loss man 😔
I’m afaraid to put my kids on my bike because I never want them to die on one what do you think I should do? I’m a lifer and they are interested as someone who rode with their dad I ask you what you would do? I never had a dad i had an uncle that gave me the fever
@@morepower3242 realize that while the chance of dieing in a motorcycle wreck are higher than in a car, they're still astronomically low for responsible riders. teach your kids to ride, but also teach them how to always pay attention and not be re**rded squids.
Great video. I also find quite often that it’s a float out of adjustment. Properly adjust float level if the pilot jet is clean and the correct size
That was exactly my issue. I haven't been riding my bike for some time, so I was trying to fix it. First, the carb was overflowing after cleaning, so I adjusted the floats, but then it was running only on choke. Adjusting the floats a bit closer to the original position fixed it.
Very nice video. Also adding an inline fuel filter with small magnet does a lot of wonders and prevents such happenings . So must be added in small engine setups like this . Atv or mini bike or moped scooter etc.
Thank you very much. This solved my KX100 running issue. Dead on to the point and issue.
Right on great video, sure as heck helped us out🏍
Pretty good- I'll tell you as one who's rebuilt a few Honda carbs: that orifice in the low speed jet is .012", .3 mm in diameter, and the use of an appropriately sized wire is actually the best way to clean it--- the wire won't open it up any, but it'll clean off any lingering debris the solvent/blowout process is unable to remove...
I got some .011" misic wire for anyone who wants some...
This helped me today.. I tried a lot to fix this. But I could not. Today I watched this video and tried again . but I updated the jet. It was successful. Thank you very much. ❤️
Thank you soo much! Helped me identify the problem on my mini Baja!
Nice. thank you for posting this.
I appreciate your time on this video, once I watched it and found the same issue with mine on a kawaski KFX 90 ran like new, My pilot jet was plug so bad that I use a very small drill bit to hand turn the junk out. wala
Thanks for the clear and easy to understand explanation. And nice to see you using JIS screwdrivers!
Thank you so much for this my son has a 2016 sportsman that’s doing the same thing. Gonna give it a shot.
Dude... THANK YOU for this video. Helped a ton!
I’m here to thank you. Im not a mechanic and I thought I would have to take my bike to one. My drz125 would not stay on pass the Choke, I opened the carb cleaned all the jets and she started 1-2 kicks, I even ordered a new carb, that’s the only reason I even tapped into the old one, thank you so much for letting me know what to look for
OMG! Thanks, 🙏 I wish I had a cold beer 🍺 for you. I was on a long ride through my neighborhood when my bike started going out on me, it was all bad. I ran out of gas, my gasket for the intake manifold was shot and from what I’ve seen here I’m pretty sure my jets are clogged also because I had to ride home with my choke 😬on.
awesome. my troublemaker is a husky weedwacker. thanks for the tips.
Thank you, helped alot
This helped with my quad gator
Bought a motorcycle this weekend. Started and idled fine. At 1/4 throttle it started leaning out badly without the choke/enrichner pulled out. It had been sitting for a long time. Pulled the float bowl off and the idle jet was fine but the bottom of the main jet and bottom of the bowl had black gunk on it. Some carb cleaner through the jet and bowl cleanup, runs like a champ now.
A little knowhow and a few tools can save a TON of money.
Nice job.
Thanks for the video. Boiled the tank,cleaned carb, looks like I missed one peice of junk! 🙂
Thats Awesome that really helped mucho appreciated!💯👍
My snowmobile starts great on full choke, runs good with half choke. I'll try this
Did you do it???...what happened
@@unrulyheart3530 all I needed to do was adjust the choke. Rode it all last winter
@@tommygleason238 you had loose choke cable or ?
@@MxRyder19 yup
Same with my dirt bike before yesterday
Hoppes #9 gun cleaner is perfect for brass jets and small parts. Shines em up nice too!
Great video, you make it look so easy. Thank you
I use a set of torch tip cleaners. Keep em in the mobile toolbox.
You might also want to check the gap/s on your valves. I was running on half-choke on the pre-owned Zhejiang 250 dirt bike I got last year. I pulled the engine to use on a 2009 Honda Rebel "Rolling Chassis" that I got dirt cheap. When the engine was sitting on a bench, I checked the valves and there was NO LASH in the exhaust valve. I gapped it at .003, and when I bolted the engine in the Honda frame and wired it..... it ran like new, again. No choke. You GOTTA keep those valves adjusted, every 2500 miles, or so.
I do agree with you,smae problem I faced , tried many things with carb but couldn't find the exact issue.finaly ended up with value adjustment.....👍👍👌👌
Great video. Helped me fix my sons 50cc dirt bike
Your welcome
I have a little Honda pbr 50cc and i thank you sooo mutch becouse i have driven whith that issue where it would idle whith choke on but when i started accelerating i would have to take it og for it too run for like a year and this fixed it Im soo happy thx soo mutch bro
I think this is whats wrong with my Buell.. for sure where im going to start on fixing it.. wish me luck!
Swan The God I remember you bo2 vids man come back
My Kawasaki too
My pilot is clogged on my Harley. so I ran 15 tanks of premium through it crossing 3 states. had to baby the throttle at stops and traffic the entire time to keep it running. At the end of the ride, it still wouldn't idle. But.. man did my riding skills improve!
HIgher octane will NOT clear a clog ... Its only benefit is when it explodes, it creates a larger explosion.
Lol.. been there mate, didn't help my clutch plates tho 😁
What do you think premium high octane fuel accomplishes?
www.consumer.ftc.gov/articles/0210-paying-premium-high-octane-gasoline
@@ACommenterOnCZcamsyeah that’s what he said😂
@@ACommenterOnCZcamshigher octane creates the same size combustion, except it burns slower and is usually a waste of fuel if your bike has electronic ignition that can't be advanced and is set to run on 91 😊 because there's not enough time for all the fuel to burn before the exhaust stroke, but it's awesome if you can run on 98 octane and advance your timing to 25° before TDC, especially when you have 12 to 1 compression ratio, like I accidentally ended up with planing 2mm from my cylinder heads heh heh 😮
Good video. Great explanation and reassembly video.
Thanks for the info, great video.
You explain things really well. Thank you! I have learned alot. Question for the opposite scenario. I have a brand new bike. 250 cc Lifan engine with a Pz30 carb. It starts just fine with no choke but the bike WONT idle on choke at start up. It's been 50s and 60s temps overnight. For context, I got the bike with a really lean idle setting, which caused stalls at traffic lights even when engine was warmed. I recently took the pilot screw out a half + turn to about the 1 1/2 mark to improve idle. Idles great now. But only with the choke completely off at start up. How is the absence of choke on a cold engine helping start up? More interested conceptually what is going on in this case.
The pilot jet and air screw setting are too rich, and that is why choke is not needed. Adjust the air screw again per this video and let me know how many turns out: czcams.com/video/TDU2KOpYwFg/video.html
Awesome tutorial man thanks for making this video!
Matthew: I posted this video on my Carburetor Appreciation Society FB Group. Well done!
Cool thanks!
Helped a lot, thanks.
Why my 86 fj 1200 would only run on choke. A malfunctioning vent valve in the vapor recovery system caused vacuum in the float bowls so no fuel could go into the jets. Full choke opens a vent to atmosphere in the float bowls so engine would get fuel. It happened on the freeway at night. so I just kept opening the choke everytime the engine would stop running.
Meet me here in Kenya,I will bye one beer🍺for you
Great tutorial. Many thanks!
Excellent "how to" video! Thanks!
I usually just use Brake cleaner when cleaning a carb, and it works just fine.
🤣 the people who are going to try this
You can use a .010 guitar E string to open the hole in a pilot jet if it is clogged with gooey gas residue.
Ya screw that. Use torch tip cleaners.
@@JM-yx1lm Most torch tip cleaners are way too large.
Haven’t seen a better explanation. Helped my derbi senda.
Great detailed video Matt!!! Please keep it up!
guitar string solves cloging ;)
Rafael Ramos da Costa thank you!
retro gaming time with joe ,,,.,””‘ok
I was about to share the same info. So many videos and nobody knows this.
Great information, camera angles need work.
Thanks!
Always clear and to the point. Thanks.
Nice video. Greetings from Poland!
Torch tip cleaners work.
Awesome mate,i did everything you said twice.. worked for a bit but i still have the same problem, I noticed you said 9 outer 10 whats the other reason.coil pack, contacts maybe. I have a 50cc motor Chinese two stroke.
What problem are you having?
MatthewMCRepair Methinks the problem is endemnic in this and rather many more cases
It's probably your idle mixture screw! If it isnt your jet try to richen your idle mixture screw
a bent valve with no compression will give you the same symtoms
Maybe it’s a bad gasket
Thanks for the vid. Exactly what my Polaris 450 is doing.
"Someone was messing with the carb" yeah, it was you🤣
I have used thin needles with great success
I take old cut down guitar strings and stick them in a wooden dowel works just as good as a torch tip cleaner :P
I use a bread tie with the plastic stripped off and it works great.
Nice video. Explained very well.
Awsome vid thanks for the help...
A guy just put me on berryman. I was using gum out. Berry works better, for me.
Thank you! This helps alot.
Awesome video, thank you so much!! I have the same bike, took it to shop and they wanted to charge me over $1900, they told me its almost cheaper to buy a new unit which they had in their show room.
They just wanted to sell you a new bike and was forcing you, pretty much. Glad you walked.
thats a sweet tip. tip up the atv. like it. im gonna try next time.
dipped mine in some sugar free red bull. worked a charm
Give em wings😂
Good Stuff! workin on a yamaha yfz 450 quad. bike sat for 2 years. I took the carb float bowl off because the needle was stuck in the seat. it was stored at the beach. salt corrosion in the float bowl . cleaned all that out. starts, idles, but won't take a rev. clogged jets maybe?
Thank you for a super informative video!
a good safe way to clean carb jets, is by using nylon fishing line. it comes in different gauges and will not damage any hole sizes
I also heard that you can bite the line to make it "bigger" and force it a bit through a passage to clean it.
Guitar string works well too.
OneLiterPeter me too! 🤘😂🤘
Mechanic in a bottle works great with out removing carb!
Sorry, not going to work in this case. Actually, I never use the stuff because it is not the correct way to do it.
MatthewMCRepair I have used it 4 times and it cleared up after running it with the choke on for few minutes! I let it sit for 12 hours with the stuff in it ! Always better to r and r it ! Best carb spray is 2+2 carb spray!
it's better to check everything
RevBiker Big D That doesn't work on rust.
Great informative video👍🏽
Every time I fix a carb problem just by cleaning everything on it it still feels like magic and it always amazes my friends.😂 most people don’t realize how important it is.
Not as hard as it seems...
My bike shut off at a long light right after it turned green...
Couldn’t get it to start without choke and some throttle...
Gotta clean me carbs dammit
A crazy trick I learned from the Seafoam rep while working at an auto parts store…. Cook the whole carb in seafoam in a crock pot on low for 24 hours. Remove all plastic parts such as floats or choke arms,, but leave any gaskets or o rings. Clears up the the gunk and rejuvenates gaskets and o rings.
great video!
read it as "COKE", disappointed.
Probably be only thing more expensive than petrol to run your bike on.. but you crack on; Just let me hose the exhaust!
I pretty much run on Coke.
Lol
Bought a 2006 Kawasaki Bayou 250 out of a local barn. It would only run on choke. I put about half a can of Seafoam in the two gallon tank. Within an hour, it was running like a champ. Only needs a little choke to start now, but often starts cold with no choke. Couldn't run better if new. Saved me a carb rebuild or replacement.
Great info, thanks!
Good video my first dirtbike 2 stroke carb cleaning same isduñññññ
It worked . Thanks
Nice explanation!
Good job buddy!
Removed all of the California emission vent tubing off my Honda Shadow 1100 1994, and was just wondering what you thought about if removing the vent hoses increased or decreased the air-fuel mixture. Or should I just maybe stay the same. Anyway thank you so much this solved my pilot jet problem
Thanks alot. My scooter runs perfect after cleaning the cab
Sea Foam is the best carb cleaner I've found. I'll qualify this "in California". Many cleaners like B-12 are reformulated for California requirements.
Awesome info always
Good video
Thanks
KLR 650 pilot screw is covered by a cap. Take that cap off, otherwise you'll be out on the trail with a clogged pilot jet and no way to get at it. Happened to me in the desert in Arizona (got sand in my fuel line, lond story). Luckily made it to the local moto mechanic in Ajo (at the NAPA) with my choke on. Then get an finger adjustable pilot needle off Ebay for $12.00.