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Home >> Chevrolet >> 1977 >> Luv Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up Procedures - 4-Cylinder >> Engine Compression
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Engine Compression

Test compression with engine at normal operating temperature, spark plugs removed, throttle valve wide open and engine at cranking speed (300 RPM). Maximum variation between cylinders should not exceed 8.5 psi (.6 kg/cm2 ).

COMPRESSION PRESSURE SPECIFICATIONS

Application Min. Pressure psi (kg/cm2 ) Std. Pressure psi (kg/cm2 )
All Models 120 (8.4) 170 (12)