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Home >> Mercedes Benz >> 1974 >> 230 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Tune-Up >> Tune-Up Procedures - 4-Cylinder >> Engine Compression
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Engine Compression

Check compression pressure with engine at normal operating temperature and throttle valve fully open. Crank engine through at least 8 revolutions.

COMPRESSION PRESSURE SPECIFICATIONS

Application Pressure
Normal 128-142 psi (9-10 kg/cm2 )
Minimum 107 psi (7.5 kg/cm2 )