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excessive crankcase pressure... causes other than oil separator? 700

posted by  Rolyak on  Mon Jul 22 10:34 CST 2002
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last visit: Fri Oct 24 08:03 CST 2014
[RELATED]

When I would pull the oil fill cap on my B230FT with major wear on the cylinder walls (.040" taper) it would spray oil out on idle. After I resleeved it (only way to save a block with that much wear) it did not spray oil at idle. Conclusion: excessive blowby=oil spray or no blowby=no oil spray.
Have you done a compression test both wet and dry? Do you have any other oil leaks?
Also on diesels we used to see worn turbos create crankcase pressure, have no idea if that's a possibility on Volvos. On the diesels we could run a manometer on the engine and disconnect the turbo drain line to see if values returned to normal, would not be easy on a Volvo,though.






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