Question about 2003 Pontiac Grand Prix

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Loosing compression on #3 cylinder what do I do to repair?

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Now you do a cylinder leak down test,to confirm valve issues
Then it comes apart, if only one cylinder
Could be a head gasket ,but not the only reason
Check the valve springs ,maybe something got stuck in there

Posted on Jul 27, 2013


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How do i tell if i have blown head gasket

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5 - White smoke from the tail pipe.
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Hi tsmediaconce:

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The main thing to look for on the compression test is one cylinder that is markedly lower than the rest.

Hope this helps Good Luck Loringh Ps Please leave a rating if appropriate Thanks

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