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Home >> Buick >> 1997 >> LeSabre Custom >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Specifications 3.8L >> Mechanical Checks >> Engine Compression

Engine Compression

Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
VIN K 9.4:1
VIN 1 8.5:1
Normal Compression Pressure (1)
Minimum Compression Pressure (1)
(1) Lowest compression reading should not be less than 70% of highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm2 ).
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