My mechanic has this running great now. Had issues last year with starting. Replaced the starter and also replaced internal charging system with alternator....However, after running on the water for about 30 mins, the engine will start running rough, lose rpms, then speed up , slow down. Could not get more than 2800RPM's..After it cools down runs fine..THen same thing after it warms up. New point, condenser, etc for the season. Pulled the tachometer wire and still the same issue..IS it possible the coil is breaking down and causing a firing problem...DOes not seem like a fuel problem...Even would back fire at times...ANY IDEAS?
