Operation CHARM
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Cadillac
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1982
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Seville V8-252 4.1L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Compression Check
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Specifications
Compression Check: Specifications
956-1138 kPa (140-165 psi).
The lowest reading cylinder should not be less than 70% of the highest. Perform compression test with engine at normal operating temperature,
spark plugs
removed and throttle wide open.