What would cause misfire on 2,4,6 coil packs

Asked by Oct 25, 2016 at 07:49 PM about the 2010 Buick Enclave CXL

Question type: Maintenance & Repair

I have changed the coil packs and plugs but still giving a misfire on those
coils

2 Answers

disconect battery for 15 mins and try again

630

Look for "stuff" ozzing out below the coil pack, there is a circuit board that is potted to protect it from moisture, when it fails and then gets hot, the potting material starts to leak out and that is a clue the circuit board is bad.

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