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Where did the compression go? S70 1998

posted by  BobL on  Tue Sep 16 16:04 CST 2014
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last visit: Wed Oct 22 21:55 CST 2014
[RELATED]

Bought this '98 S70, non-turbo, FWD with 184K miles and no service records. Put on new timing, serpentine belts, and heater core then drove it 5,600 trouble free miles to Québec City and back to OK, including the Blue Ridge Mountains. Ran great, giving 30 - 32 mpg. CEL reporting evap emissions leak, before and after.

This is my first FWD. I admit to struggling with the timing belt and the goofy belt tensioner.

Shortly after getting back home, all of a sudden it cranks strong but just will not fire or start. It ran very well for the 5,600 miles and the timing still appears to be on. When checking the timing marks, the engine turns over easily by hand. It seems to be losing compression.

Does this sound like jumped timing? What would explain the loss of compression?






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