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low compression 850 1994

posted by  someone claiming to be a volvo tech on  Thu Feb 12 10:12 CST 2004 [RELATED]

Yes it is an intereference engine.But I doubt if you have bent valves or the compression would be zero on each cyl that has a bent valve.Do a leak down test to find out whats leaking the compression.Also you might want to take the car out on the hiway and drop the gearshift into 3rd gear for a bit.This will increase the rpm,blow out any carbon and help re-seat the valves.Then do another compression test and see if it improves.






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