Originally Posted by
ZERACER
Read back to onehundred80s post. He gave you a couple of good leads that wouldn't cost anything to check. Your mechanic should do it for free since the problem may be his.
The mechanic that did the tune up has already checked his work, including the plugs and wires replacement. Assured me they're OK. I'm not sure what a loose engine cover is, but I'll check the engine compartment myself.
The problem may very well have existed prior to the tune up and Seafoam, because prior to the tune up and Seafoam, believe it or not I pushed it to 4,000 RPM and beyond only two or three times. That was over a two year period. It didn't exhibit the problem then, but that could just be the randomness of the issue at that time. But now it's not so random.