1978 xs650 pamco, PMA, cam chain good, timing good, valves good. .30 pilots, 145mains, slide needle 2nd notch... carbs were synced, if not very close, both plugs looked the same (good). I had a flat spot off idle (lean) and slight popping when cruising. floats were set too low (27mm) so I adjusted them to 25mm, this cured the flat spot and it pulls much better and harder, but now my left side is running rich at idle and backfires every 5-10sec or so, it actually popped the left carb out of the holder at idle.
So, my question is, can I lean the left float slightly to try and lean that cylinder, or should I be looking more towards my carb sync (could it have been knocked out of sync when the carbs popped off?) I know the sync screw on my bike is VERY touchy.
any help would be great, thanks!!
So, my question is, can I lean the left float slightly to try and lean that cylinder, or should I be looking more towards my carb sync (could it have been knocked out of sync when the carbs popped off?) I know the sync screw on my bike is VERY touchy.
any help would be great, thanks!!