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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1996 GMC Sonoma Question: pcv valve test.
Answer #1mastertech6371 December 01, 2010, 12:51Master
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.
Replyrodie, December 01, 2010, 13:03Rookie
How is the best way to repair this leak? Thanks.