Mikuni 24mm with 110cc

[Stomper]

Hi, would this carb work on a 110cc, and if so what jets?



Stock this is what i got, but it's not working, spark plug is black and the idle is too high, 3000rpm.

[PlanetMinis.com]

[dood]

Can't tell which carb that is so don't really know which way to tell you to go.

Based on what you say, I would go to a 17.5 pilot or 20 and drop the main down to a 80.

[Blackwoodz]

Idles that high you have something wrong...wrong needle. slide not seating or an air leak. That looks like the Chinese Mikuni 22mm carb.

[Stomper]

no air leak, the 19mm carb is working fine with the same intake.

slide is seating well

needle was the one i had with the carb.



I buyed the carb on ebay, fit bolt-on like advertised, but dont work bolt-on LOL.



So, what can i do to get the idle down?

[fatcaaat]

On a full blown 110 racing setup, I onced used a tm24 flatslide. I jetted 17.5/150. This was intake, porting, pipe, cam, and a high compression setup with stroker.

[Blackwoodz]

I have a 125 with that exact same Chinese Mikuni 22mm oval bore carb. It works good with that stock setup. I have no clue why it would be idleing high.... unless the tank or something is binding the throttle cable not letting it return to seat.

[Stomper]

the throttle valve is seating well, if it was only that i wouldnt had asked help.



I tried everything possible, nothings work, the idle dont want to get down, nothing to do.



If someone have a clue let me know, for now this carb is real junk for 100$, dont worth 1$ so dont buy mikuni carb on ebay.



My chinese carb is working fine and the real mikuni doesnt work, LOL.

[T Bolt USA]

what you have there is your basic 22mm mikuni (china)

if your plugs black your too rich

Pilot Jets



VM28/486 Series fit all RS and HS Carburetors (Mikuni)



Sizes: #15, 17.5, 20, 22.5, 25, 27.5...and up



Main Jets



100/604 Series fits all RS and HS Carburetors (Mikuni)



Sizes: from #60 thru #100 (60,70,80,90,100) from 105 thru 200 in sizes increments of 2.5

[Realgun]

I have the same problem. After installing a 22mm carb the darn motor will not idle. I spins at 5000 RPM.



I have removed the cable to see it that a problem and nothing changed.



Interestingly I can put my hand over the carb mouth and get a nice idle.