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Home >> Mercedes Benz >> 1986 >> 190D Automatic >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Tune-Up - Diesel >> Testing >> Engine Compression

Engine Compression

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

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 22.0:1
Compression Pressure
Normal 348-435 psi (24.4 - 30.6 kg/cm2 )
Minimum 218 psi (15.3 kg/cm2 )
Maximum Variation Between Cylinders 44 psi (3.1 kg/cm2 )