This post reminded me of a commercial... " You say, you have a crack in your coil pack... I just want to say, heyyyy..." I think it was a commercial for windshields. Anyway, leakage during high engine demand (hard acceleration) would def cause misfires. Depending on where in the pack the crack is, it could easily be a lot worse. I would change all 6 since it seems that run of coils are bad (unless you're in a super-hot state and the car is running exceptionally hot). You might also see what you could do to cool down the engine compartment (if possible). Good luck!


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