[s-cars] S6 crankcase pressure

dgraber460 at aol.com dgraber460 at aol.com
Wed Jun 25 05:47:40 PDT 2008


On the AAN engines, should (or shouldn't)?there be a check valve somewhere to keep the valve cover and crankcase from seeing full boost?
Thinking I might have boost leak I pressure tested the system and the oil filler cap whistled like hell with only 10 PSI applied. I am getting a strong whistle during shifts and full boost, so I know I'm loosing pressure somewhere, and it seems to be the oil filler cap. Car runs fine and pulls strong, I just don't want to blow all my gaskets.
TIA


Dennis Graber
Quality Linings & Painting
Denver, CO


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