Cylinder issues

Asked by Jul 22, 2017 at 09:03 PM about the 2005 Chevrolet TrailBlazer LS 4WD

Question type: Maintenance & Repair

I've replaced coil packs, spark plugs, and the #4 coil cylinder has no firing to it at all.  What can I check next?

2 Answers

920

Spark plug wire resistance or if it has an open circuit status

69,405

Compression test that cylinder. If you have no compression or very low compression it's a burned valve. HTH. -Jim

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