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Home >> Buick >> 2011 >> Lucerne V6-3.9L >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Compression Check >> Specifications

Compression Check: Specifications

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COMPRESSION CHECK

Record the compression readings from all of the cylinders.

The lowest reading should not be less than 70 percent of the highest reading.
No cylinder reading should be less than 689 kPa (100 psi).
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