09 crf450x running like .
Posted: Tue May 02, 2017 1:35 pm
by Crf450xfarmer
Bike has a high compression piston. Can't seem to get it to idle properly. It will idle low after I give it throttle but then slowly climb by itself and idle way to high. Backfires quite abit when you let off when riding
Re: 09 crf450x running like .
Posted: Tue May 02, 2017 9:29 pm
by Back2-2
Sounds like an air leak on the intake side of the carb. Maybe the manifold / intake boot, carb body / slide, air screw ?
Use some starting fluid to spray around those areas and see if the idle jumps up. Might not hurt to check the air screw for the o-ring.