Tune Your Chinese ATV Carb 

This is exactly what is happening to my kids 50cc quadebike. Could you possibly post a link for a video to do this as I'm completely new to this and don't have the first clue. Tanks in advance

I think I’ve got a spare carb laying around here somewhere, I’ll see if I can make a video.

@@BellyUpFishGarage hey you ever make that video lol. I just got a grom clone and I bought a nibbi for it. It Boggs if I give it to much throttle to fast but if I kinda east into it, it’s fine? Should I adjust the needle?

​@@johnnyburgett7215 no video yet i guess

No, I’ll see if I can make one this week.

There is NOTHING to "tune" other than changing jets and turnning the air bleed 1.5 turns from lightly seated

Pretty sure we can file “turning the air bleed screw” under “tuning.” 😆

They certainly can. This wasnt a thorough explanation by any means.

I concur ❤

Omg I think you just saved me from going out getting another carb, I got a new Chinese pit bike 125 and it didn't have no idle screw or air but there is these rubber stoppers hmm 🤔

Well i probly messed up idk if i drilled too far and i 100% used the wrong drill bit and think i destroyed the screw face

I actually am checking the jets on my new carb for this thanks for the tip

Sometimes you need to drill a hole and screw a sheet metal screw into it . Then grab the screw with some pliers and yank the plug out.

Andrew Vela Glad you could get your kiddos ATV going!

@@BellyUpFishGarage p

Man, I'm glad you found it helpful!

Dylan Diel Glad it helped!

Me this weekend 😂

You’ve got this! 😆

Glad it was of some use.

So how did you get it adjusted

@@omexgazplayz6298 I just went and bought a new carburetor. They are less than 20 bucks on Amazon.

@@georgesmith6154 are the carbs interchangeable? I just bought, apparently a predator 250cc, but vin number shows no such things, other then conquinghensim Corp. Lol I cleaned the jets, replaced the fuel and replaced the relay fuse, it idles fine but when driving, misfires and backfires

Yeh, for the most part, many of these Chinese quads all use the same style/size carb.

I’m glad it helped!

Pop the chain off.

Odi Well thank you. Maybe I’ll post something else you can find useful. ;)

I’m glad it helped.

I’m glad you found it useful.

Antonio Hernandez That’s great! You’re welcome.

That's a scam mechanic damn

Thats a shitty ass mechaniv

Stewart McGill Excellent! Glad it helped! Hope you had a great Father’s Day.

Glad it helped!

I'm glad you found it helpful!

ッJackie cool, is it still kicking?

@@deborahchesser7375 nope, eventually got so unrepairable just dumped it. we bought a bunch of new parts for it, to no avail. just bought a 1999 yamaha breeze 125 and its a beast.

Maybe that explains why you picked it up to 200, totally sucks

Glad it helps! RU-vid has helped me so much, it’s nice to just be able to help others with what little I’ve got. ;)

MissingLink MTB They certainly seem more picky than bigger bikes.

I feel like if you raise the needle it may also help. I've just started playing with these chinese ATVs and the cheap carbs are pretty finicky I've found. I bought 2 new ones that run perfect and then bought a 200cc to play around with. It needs some work and somebody put a MOLKT carb on it. It's been a learning curve. At least they're cheap to beat around on.

Excellent! Glad it helped!

Glad I could help!

Now people at the shop are wondering why business is so slow.

The starter is about the only thing I’ve haven’t replaced. 😆

Happy to hear it was of some benefit for you! :)

I know the feeling. One of our 125’s was like that....

Thorn Life Glad it helped!

AndrisBoost If it helps 1 guy help his kid have a better day, that’s medal enough. ;)

I think they’re extremely common.

tdub2399 You’re welcome. Glad it helped.

“Supreme Leader is pleased”

Like… quad + lawnmower = speed mower?

Welcome to the guild!

Make sure your slide isnt installed 180 out. Ive worked on one where the slide was put in wrong, meaning it needed turned to where it would slide down all way in..

One more thing, make sure you dont have vacuum leak..

Adjust it to what clip position? Mine is in the middle...

@@JM-yx1lm adjust it lower on the needle. It will raise the needle in the main so it gets more fuel.

Sounds like it could be going lean. I'd try to tune it a little more.

If it doesn't have a slot in it, it's not adjustable. So, you'll the only adjustments you can make will be idle screw.

Sounds like you might be referring to a Welch plug. If that’s the case, if you have an air compressor, drill the smallest hole you can into the center of the plug and then blow compressed air into the hole and the plug will come right out.

Did you follow the directions in this video? I’d say your air fuel ratio is off, one way or the other.

@@BellyUpFishGarage I did and it’s working ! Running very well. Unfortunately it’s moving on its own in D or R even with zero throttle .. what’s up with that?

@canadiancraftbrewerytours Could be a couple things. I’d start by bringing the idle speed down some. Could also check the throttle linkage.

@@BellyUpFishGarage perhaps when changing the carb I installed the throttle cable wrong ?

@@canadiancraftbrewerytours Check and make sure the throttle barrel is in the sleeve correctly.

Fortunately, using this method, I’ve been able to avoid that part. ;)

Hahajaha you a fool homie

David Griggs how do you do that?

@@dirtballnvegas9311 I was referring the guy that made the video and his bikes bogging just off idle but i will explain it to you. If you undo the throttle cable end and remove the slide and needle , on top of that will be either a threaded cap or a clip of sorts that keeps the needle in position . Remove this retainer and the needle should be able to be separated from the side . There will be a C clip on the needle with notches above and below the C clip that you use too adjust when fuel from the main jet enters the engine because this needle when in the rest position drops down onto the main jet blocking fuel from there until it's required. The bike in the video had the clip position too low and was allowing fuel from the main jet too enter the engine because there was a gap between the needle and main jet which you don't want when the bike is basically still at idle . By raising the clip position it allows the slide too open allowing more air in and for the idle jet to do it's job and the needle too open later removing that bogging that you can hear in the video. Hope this explains it for you 👍

David Griggs thank you so much brother. Mine is having this problem. It’s brand new. I appreciate you.

@@dirtballnvegas9311 When you pull the needle and slide out before you go adjusting the clip height pull the bowl off the carby and remove the main jet check you don't have a obstruction in the needle entering end of that jet or on the main interior of the body down where the needle drops through. If this is all clear then shift the clip height 1 position at a time until it clears up .

2 to 2.5ish.

No doubt, maybe I should look into one.

No you don't, mine is on the bottom too. All I did was use a stubby flat head screwdriver and adjusted it.

Could be a lot of things, but it’s usually just a dirty carb. You could try cleaning the carb. For the price of a new carb, I’d be tempted to just throw a new carb on there.

More fuel, and less air, is done by turning the screw "out". Less fuel, and more air, is done by turning it "in".

Glad it was useful to you.

Welcome.

If you've got spark and it'll fire occasionally, it sounds like a fuel supply issue.

Blocked pilot jet

@@joeltamai8758 but i cleaned it and still only want to run on choke

Could be a couple things - too lean or rich would be where I’d start. I’d see if it’s too lean. If it’s neither of these, it could be a number of clogged things like jet, or a fuel line, or air filter.

Turn this screw clockwise,

I dropped a tooth on the front sprocket and added a tooth on the rear sprocket and it would hop logs with a 250lb adult.

Glad it helped.