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1990C4S 1990C4S is offline
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Join Date: Sep 2009
Location: North of You
Posts: 9,160
Volvo engine? Valves not rings is the typical problem in my experience. At a similar mileage my 850 engine bores looked like new. The valves, not so much.

Leakdown test will tell you very quickly.

Also, the Volvo PCV system is a total PIA...and I'm thinking that's not your real problem. Those engines usually run and idle regardless of the PCV condition.

Did you try the Volvo glove test?
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Last edited by 1990C4S; 03-09-2023 at 06:55 AM..
Old 03-09-2023, 06:53 AM
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