Question about 1996 Volvo 850

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Too much crank case pressure

I have a 1996 volvo 850 with too much crank case pressure. What could be the cause of this?

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Oil too thick. pressure relief valve stuck close.main oil line from pump is clogged.

Posted on Apr 19, 2009

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To much crankpressure can be caused by a couple of things....a clogged PCV valve(cheapest) or compression blow-by at the piston rings ( most expensive) you need to have a cylinder leak down test performed...that will tell you where the problem is

Posted on Apr 19, 2009

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