poobah22
XS650 Member
I just bought a 1978 off an old friend this past fall and I holed the left piston which caused me to spend the entire summer breaking the bike and the motor all the way down and re-building it. I finally finished and got it all back together and got it running so I'm pretty jacked about that. The problem I am having is when I am trying to set the timing, with a timing light, I am able to get the right cylinder to line up exactly where it is suppose to at low idol, approx. 1200 rpm, right at the F mark however when I try to set the left cylinder I can't rotate the point plate enough to get that cylinder to fire where it is suppose to, at the F mark. I can get it half way between the full advance mark and the F mark. When I first starting working on setting the left cylinder it was firing before the full advance mark. It seems to be running a little rough and backfiring so I am a shade concerned that all my hard work is going to get flushed down the toilet. I am also wondering if this is what contributed to holing the piston. Does anyone have any suggestions of a cause of this and what I need to do to fix it?? Any suggestions would be most appreciated. Thanks.