mini bikes 101

[teapot]

Originally Posted by Dangle_kt

well the choke restricts air flow to richen up the mixture. That suggest to me a partially blocked pilot jet, idle set stupidly low or mixture incorrect?

sorry ignored your last post, compression is good too.

i cleared both jets before i started etc. i have tried adjusting the mixture screw though but surely it should still idle?

[teapot]

Originally Posted by binge

Not sure if you can do it on a pit bike. But I've seen it in the past, the timing being 180deg out.

I had a similar problem with the TZR engine yonks ago.
Turned out to be a faulty stator.




Ben

yes i've seen that before but timing in cam sprocket and stator both right

[harrison27]

well if its running on choke then its the mixture.

is it filter or air box?

is the carb clean inside?

fuel line kinked?

[teapot]

Originally Posted by HarrisoN*

well if its running on choke then its the mixture.

is it filter or air box?

is the carb clean inside?

fuel line kinked?

filter is off

carb is clean

new fuel line, no kinks

[teapot]

jobs a good un

[Dangle_kt]

and the problem was......???

[teapot]

Originally Posted by Dangle_kt

and the problem was......???

no idea tbh, made some new manifold gaskets and flattened the base of the manifold as it was on the piss, just fiddled with the mixture, thanks for your help dude, and every one else that posted. still on the original carb too

[Dangle_kt]

as would be said on seventteinches.

tidy darts.

[crf50.]

Sounds like it had a blocked float needle valve. what happens is **** blocks the float needle valve then the bowl cant fill with enough fuel to run the engine. ive had this problem many of times in the past.