right i own a runner 172 its got a pm59 pipe, 25mm carb (107 jet) other than that its standard.. The problem ive got is ocasionaly when i give it a little throttle to say 60 and then come off the throttle instead of popping it just stays silent likes its cut out, if i then pull the throttle again it is really spluttery for a few seconds.... this fault hasnt always been there just started and doesnt happen all the time, also its really hard to wheelie once its warm much easiar from cold(im no wheelie pro just learnng) any ideas please.. cheers joe
rich full throttle... drop the jet a little and check your needle position... idle mix is probably wrong. basicly the carbs just been thrown on the bike without setting it up atall.
same problem with mine but not as bad, giving it more acceleration from 60 it would bog down for 3 seconds. I'll down jet too when its running again