Volvo AWD 850 Forum

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850 Compression 850 1993

posted by  someone claiming to be Tim on  Mon Jan 2 14:29 CST 2006 [RELATED]

My 850 has been running like a champ. 500 mile trip on Thursday through Saturday.

Go out this evening to start the car. Cranks, almost starts and then the cranking is faster than normal. Timing belt still OK, compression is garbage, 50-75 lbs in each cylinder. After poking around I am thinking the crank gear retaining pin sheared off as the camp gears are bolted in place.

Anyone experienced something like this.

Thanks, Tim








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850 Compression 850 1993

posted by  someone claiming to be fixit 2003 on  Tue Jan 3 01:58 CST 2006 [RELATED]

It seems that 850's flood easily when they don't start up right away. The extra gas may have washed the oil off the rings causing the low compression. Try squirting some oil in the cylinders. The camm rotation sensor may be bad if the plugs are wet.







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