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1996 GMC Sonoma Question: pcv valve test.

 

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rodie, 4.3L V6, Green Sea, SC, December 01, 2010, 12:39
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How do I check pcv valve to know if it is operating correctly? I have a sudden engine oil leak coming from near the rear of engine and is a considerable amount. It may be main seal or oil pan leak. Thank you.

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  • Answer #1

    December 01, 2010, 12:51
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     Master

    with the engine running. there should be vaccuum at the valve. it removes excessive crankcase pressure and re burns it in the intake system. if it is bad, it will cause a leak and the rear main is a common leak point.

    Roy

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    rodie, December 01, 2010, 13:03
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    How is the best way to repair this leak? Thanks.

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