I ve just bought a new lifan 140 KEIHIN REPLICA PWK 28mm FLATSLIDE CARBY KIT not knowing any thing about jetting and carbie sizes . well from botttom to mid it runs like a treat but get near top end and it bog somthing shocking and i ve tryed to tune it out with no luck and the idiel rev to hard as well the slow jet is 37 and the main is 102 i am thinking they may be too big for the motor please help thank you .
need help
- Thread starter azza06
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