Guys,
I will check to see if it misses at rpms other than idle. I never really looked at that. I do not have the ear or "feel" to discern missing under a load. I can really only confirm the random miss on all cylinders by using a timing light on each wire and watching the light blink and miss randomly. Since I increased the spark plug gap it is a little better. (Gap went from .035 to .042)
I get a popping out of the exhaust associated with this as well.
The fuel system is all new. New tank, new lines, rebuilt carb, gas is a few months old as I don't drive it much. The carb could be suspect as I have had some difficulty with it. But I am pretty sure the carb is rich if anything. My plugs went from black to grey/white when adjusting the carb with only little change in the missing.
The vac advance seems to be working ok when you rev the engine. There is a little play in the linkage which allows about a 2 degree change in timing if you take up the play.
I have been fussing with this all summer. I have a replacement carb on the way that I will rebuild and try to see if it will make a difference.
Will valve adjustment cause this???
Thnaks for the help.
Rich
