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