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Home >> GMC >> 2007 >> Envoy 4WD L6-4.2L >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Compression Check >> Specifications

Compression Check: Specifications

Engine Compression Test 1482 kPa (215 psi)

Record the compression readings from all of the cylinders. A normal reading should be approximately 1482 kPa (215 psi).

The lowest reading should not be less than 70 percent of the highest reading.
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