Dirt bike not starting after installing new carburetor?

[Mrcrazed]

So I recently installed a new carburetor on my 200cc dirt bike, and now it will not work.. It runs for about 2 seconds, then quits. No mater what I try, it refuses to cooperate. Adjusting the fuel to air ratio doesn't appear to make a difference whatsoever. any help?

 

[weberdarren97]

Um, isn't this forum for computer stuff?

 

[darky26]

Um, isn't this forum for computer stuff?

People are going to ask him to ensure all is fine with the PSU and install the latest drivers 😀

 

[weberdarren97]

Um, isn't this forum for computer stuff?

People are going to ask him to ensure all is fine with the PSU and install the latest drivers 😀

Lol

 

[weberdarren97]

Well I guess the engine basically is the power supply unit... So no, all is not fine with the PSU. Lol

 

[Mrcrazed]

Um, isn't this forum for computer stuff?

People are going to ask him to ensure all is fine with the PSU and install the latest drivers 😀

Lol

I did that, and it gave me an error "carburetor not detected"

 

[junkeymonkey]

well even new you got to check the float then the throttle valve and the air fuel mixture ? set idle speed adjustment ?? [you got to have a base gap to get things going ]

look up a on line manual on all that read and learn .. then do you know if the valves of the motor are set and proper clearance [4 stroke ] ? check compression of the cylinder head ? all that goes hand in hand .. its not like just slap it on out of the box and runs great

 

[SKIPPY PB]

What dirt bike? Was it running before? And what carb did you replace it with and why, and was that carb running before?

 

[Chicano]

Check that the carburetor choke is working... All engines need a richer air-fuel mixture when cold, adjusting the carburetor fuel-air mixture doesn't do much, you need to check that when the engine is cold, the choke flap is closed leaving a gap of around 1/16" to 1/8" (estimated) you can check the exact gap size in a motorcycle make shop manual, but with 1/16 to 1/8" it should start and stay running even if choppy before it warms up.

If the choke flap checks ok, check the carburetor idle screw, check the intake manifold for vacuum leaks, check carburetor fuel bowl level, readjust the fuel mixture screw turns to stock.