I've finally got my 1983 xs650 charging, now it won't rev. It idles fine, starts stuttering and backfiring when i rev it. The problem started while i was on the highway on my way home, the bike starts stuttering. Made it home, but now the stuttering starts in the low range rpms. Recently replaced the rotor before this happened as it had charging issues. Now its charging fine, tested the rotor again its good. When i unplug the regulator the problem is completely gone, bike revs up fine. Does this point to the pickup coils on the stator gone bad? I thought it needed a carb cleaning as i havent been able to ride much until i unplugged the regulator and it goes thru the rpms fine. Any ideas are greatly appreciated!
Sounds suspiciously like my problem....
http://www.xs650.com/threads/need-help-with-tuning-frustrations.53670/