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Old 23-02-2010, 07:35 PM   #2
jayce
 
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Join Date: Aug 2009
Location: south wales
Posts: 239
Bike: crf 450,wpb 140
Re: Pit bike wont run properly

Quote:
Originally Posted by Kimishyoko View Post
Ok i know this question has been answered multiple times but this is the deal, i got a lifan engine 150cc baught today 120$ i began to drive it and when i go over quarter turn the bike bogs and like lags wont actually power on and lots of popping like backfiring, i am running rich very infact but the thing is i have cleaned my carb 3times over i have adjusted the mixture screw every turn possible and the bike will still bog over quarter throttle i have also moved the throttle pin on every notch i have and i am stumped for any other more ideas what it could be any help would be apreciated. i cant seem to get out of being rich on my spark no matter which way i adjust my screw
sounds like its lean ,mine was holding back when over half throttle and popping ,put a bigger pilot jet in mine that sorted it ,but if the plug is black ,ie to rich try going down a smaller jet
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