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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 engine revolutions per cylinder to determine engine compression. Engine cranking speed should be 250-400 RPM.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
1.5L 9.5:1
2.4L 8.5:1
3.0L 8.9:1
Compression Pressure
1.5L 192 psi (13.5 kg/cm2 )
2.4L 119 psi (8.4 kg/cm2 )
3.0L 119 psi (8.4 kg/cm2 )
Maximum Variation Between Cylinders 14 psi (1.0 kg/cm2 )