2007 Cobalt 2.2 Timing Chain Replacement - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 3 (permalink) Old 06-06-2013, 05:16 AM Thread Starter
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2007 Cobalt 2.2 Timing Chain Replacement

Hey guys does anyone know if I can take off the cover of the timing chain to see the condition of the sprocket on the crank for the timing chain? I think that sprocket might be bad. I had the chain replaced about 50k miles ago and the mechanic says it jumped time.

Does anyone know if this ecotec engine is a zero interference meaning the vales wont hit the pistons if it jumps time?

The mechanic says i need a new head because the valves hit the pistons but i'm not so sure about that.

Last edited by Coby7; 06-06-2013 at 05:33 AM.
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post #2 of 3 (permalink) Old 06-06-2013, 05:32 AM
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Ecotec is an interference motor. Timing chain usually jumps timing because tensionner fails.

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post #3 of 3 (permalink) Old 06-07-2013, 12:22 PM Thread Starter
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Any thoughts about the sproket on the crank? Ever see that go bad?

Do you have any links on how to time this engine, I cant seem to find anything on google.
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