I have a 2008 cobalt LT 2.2L with a misfire in #1 compression shows 35 psi what could be? any sugestions will be greatly apreciated thanks.

Asked by Oct 26, 2013 at 10:55 AM about the 2008 Chevrolet Cobalt LT Sedan FWD

Question type: Maintenance & Repair

My 2008 cobalt has a misfire in #1 cyl. after changing the coil, spark plugs, injector still misfires, run a compression test and #1 shows 35.psi.    hope is not the engine!

3 Answers

45,915

What did the other cylinders test at? If they were much higher, then I would say you have a bad piston ring on the #1 cylinder. Check out what this guy says on the first post....http://www.cobaltss.net/forums/2-0l-lnf- performance-tech-153/gm-compression-specs-273564/

6 people found this helpful.

thank you for the answer. the cylinders 2, 3, 4, read 150 psi steady. Will check in the post suggested Thank you again.

78,085

You have a stuck open or burned valve. Time for a valve job. HTH. -Jim

1 people found this helpful.

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