"Jay Honeck" wrote in message
news:cI9od.66570$V41.11973@attbi_s52...
Our JPI EDM-700 engine analyzer may have paid for itself today.

Try exchanging the upper and lower plugs on the #2 cylinder and see if the
problem switches to the other mag. Don't clean or do anything to the plugs
or harness, the first priority is to identify the problem. It has to be in
the ignition system.

Mike
MU-2
Helio Courier