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Home >> GMC >> 2002 >> Safari Van 2WD V6-4.3L VIN X >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Compression Check >> Testing and Inspection
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Compression Check: Testing and Inspection

Normal
The compression builds up quickly and evenly to the specified compression.

Leaking
The compression is low on the first compression stroke. The compression builds up with the following strokes, but does not reach the specified compression.
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