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Engine Compression

Check compression pressure with engine at normal operating temperature, throttle wide open, and engine at cranking speed.

COMPRESSION SPECIFICATIONS(1)

Application Normal Pressure psi (kg/cm2 ) Min. Pressure psi (kg/cm2 )
Diesel 398-483 (28-34)  
Gasoline 142-184 (10-13) 107 (7.5)
(1) Maximum difference per cylinder is 42 psi (2.95 kg/cm2 ) for gasoline engine, 71 psi (5.0 kg/cm2 ) for diesel engine.