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Engine Compression

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

COMPRESSION SPECIFICATIONS

Application Specification
Compression Pressure
Normal
2.5L & 4.0L 120-150 psi (8.3-10.5 kg/cm2 )
4.7L 140-180 psi (9.8-12.7 kg/cm2 )
Maximum Variation Between Cylinders (1) 30 psi (2.1 kg/cm2 )
(1) Information for 4.7L is not available from manufacturer.
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