When i pull in the clutch it screams. Why..???

[Gstrampe925]

I jusr put a new racing carb on this bike and it revs really loud like super high when u pull in the clutch and and backfires sometimes when i hit the killswitch... idle screw seems to do nothing and im already using my nt carb screw now cuz the first one vibrated out has anyone else have a problem like this and know what im probably doing wrong? Thank

 

[Spare_Parts]

You have a vacuum leak probably at the carb to intake connection.

 

[Gstrampe925]

Oh ok thanks i added an old boost bottle too when i got the carb and thats when i noticed that problem.

 

[Will'smotobikes19]

Mine does the same thing pull the clutch and starts revving

 

[gary55]

Get rid of the boost bottle. They are all hype just to get your money. Spare parts is most likely right about the air leak. Either at the carb to intake or the boost bottle connections. If that don't work check that the cable casing is not hanging up at one of the ends.

 

[gary55]

I jusr put a new racing carb on this bike and it revs really loud like super high when u pull in the clutch and and backfires sometimes when i hit the killswitch... idle screw seems to do nothing and im already using my nt carb screw now cuz the first one vibrated out has anyone else have a problem like this and know what im probably doing wrong? Thank

You probably know this, but the front brake setup you have is wrong. You need longer calipers to reach the rim. that is going to destroy your tires.

 

[Spare_Parts]

Mine does the same thing pull the clutch and starts revving

Lol!

 

[JerboaJohn]

then run into pads eating the rim up. get some discs! can't go fast unless you can stop quick

 

[Just_Doin'_My_Own_Thing]

I jusr put a new racing carb on this bike and it revs really loud like super high when u pull in the clutch and and backfires sometimes when i hit the killswitch... idle screw seems to do nothing and im already using my nt carb screw now cuz the first one vibrated out has anyone else have a problem like this and know what im probably doing wrong? Thank

I believe your bike is so fast that it has given itself launch control

On a more serious note does it idle better with the choke on?

If so it is running too lean, lower the c-clip down 1 notch and see if there's any improvement

 

[mark20]

I jusr put a new racing carb on this bike and it revs really loud like super high when u pull in the clutch and and backfires sometimes when i hit the killswitch... idle screw seems to do nothing and im already using my nt carb screw now cuz the first one vibrated out has anyone else have a problem like this and know what im probably doing wrong? Thank

have you checked the throttle cable?
it could be too short and its not letting the slide go all the way down.
other possibilitys are air leaks. and the idle screw is different so it might affect it. (ie not reaching the slide enough or pushing the slide up too much)

good luck! keep us posted.