mustang missing

Asked by Mar 07, 2019 at 07:33 PM about the 2003 Ford Mustang

Question type: Maintenance & Repair

my mustang is missing on last 2 on the coil packs i replaced coil pack 3 times
an the ignition module crankshaft sensor cam shaft sensor does anyone know
why its skipping it backfired and then started skipping could it have jumped
timing

1 Answer

117,495

Chances are if it jumped timing it wouldn't run at all. Compression test the misfiring cylinders. If they both test very low or zero it's most likely a valve problem. If the two missing cylinders are next to each other and the compression is low or zero on both it's a blown head gasket. Hope that helps! Jim

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