compression

PLYMOUTH
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RAINEDOUT2000
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I was given a 1973 plymouth valiant. I checked the compression from front of the engine to the back was 90, 90, 90, 0, 90, and 155. What could be the problem?
Mar 10, 2006 at 8:03 PM
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JACOBANDNICKOLAS
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The engine is worn out. It needs to be rebuilt. The 90 PSI is very low, 155 PSI is normal, and the 0 PSI concerns me. It could be a bent or stuck valve, a hole in the piston... You need to pull the head off to check for the cause.

Let me know what you find and we'll go from there.

Joe
Mar 22, 2009 at 1:45 PM
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