Mechanics

ENGINE OIL PRESSURE

1996 Volvo 850

Engine Mechanical problem
1996 Volvo 850 4 cyl Two Wheel Drive Automatic 202000 miles

The pressure built up in the engine is not being released thus resulting in the oil being forced out of the top engin oil cap.
Air hissing sound can be heard.
Car was less used for the past 4 months.
Is there a pressure release valve in this model?
What could be the problem?
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Ravin
October 6, 2009.



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