1998 Grand Prix 3.8 L "Cyl 6 Misfire Detected"

[doctorhrdware]

Is it possible that he has spun a connecting rod bearning, I did this and had to have the engine replaced. The car was running hotter and was also very hard to start was pulling much more current to start the engine.

[werwin10]

My 2000 GTP had a similar issue, it idled and maintained speed fine but had a bad miss when accelerating at any speed over 30 mph. Changed plugs, wires, coil packs, PCV, air & fuel filters, and had the injectors cleaned. Did some of the things twice but all to no avail. Problem was finally solved when I found the ohms reading on the old coil packs (5.7ohms) to be different than the new ones (8.3 ohms). The old coil packs are back on and she is her old self again (careful what you get from the aftermarket retailers!).