400exfirebrethr
09-23-2010, 07:34 PM
aight yet again another jetting thread but this is making me so mad and can't figure it out! my bike is an 08 stock every thing, i decided to take the end cap out the exhaust and take the airbox lid off. well it bogged when i would bang the throttle while riding, then i switched to a 140 main and 45 pilot (stock is 122 and 42) well it would still bog when i bang the throttle and i tried adjusting the a/f screw(didn't work) so i put the airbox lid on it and it ran fine. so then i stepped up to a 48 pilot jet and now it idles rough, misses at 1/4 throttle in neutral and bogs when i bang the throttle so i don't know if it's lean or rich. could it be the acc pump not putting enough fuel out???