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Engine Compression

Ensure engine is at normal operating temperature, battery is fully charged and starter is operating properly. Remove all spark plugs and hold throttle valve wide open. Crank engine at least 6 revolutions per cylinder to determine engine compression. Engine cranking speed should be 250-400 RPM.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
1.5L 9.4:1
2.4L 8.5:1
3.0L 8.9:1
Compression Pressure (1)
1.5L 192 psi (13.5 kg/cm2 )
2.4L 150 psi (10.5 kg/cm2 )
3.0L 150 psi (10.5 kg/cm2 )
(1) Maximum variation between cylinders is 14 psi (1.0 kg/cm2 ).