Guess you have. Last misfire I experienced on my own car (not the Acadia) was a leaky plug wire. In low light, the spark could be seen arcing from the side of the wire into the engine. Had a few coil-over-plug coil packs go bad on Chrysler 300s and Lincoln TownCars, too. Stuff happens!TripleClamp said:We've been lucky then with all the cars we've owned then ...