Hi guys,
Got a problem with my j2 running rough at small throttle opening.
Riding on part thottle, say about 50mph bike seems to be misfiring. Open the throttle and it clears. Started it from cold and found the header pipe on number 1 cylinder was colder than the others. Took tank off and airbox lid, and noticed the throttle slides would chatter on 3 of the carbs but not on number 1 cylinder. Could this be the problem?