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Home >> Mercedes Benz >> 1987 >> 560SL >> Repair and Diagnosis (Single Page) >> Engine Performance >> Adjustment >> Tune-Up - V8 >> Testing >> Engine Compression

Engine Compression

Check compression pressure with engine at normal operating temperature, throttle valve fully open and all spark plugs removed. Crank engine at least 8 revolutions per cylinder.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.0:1
Compression Pressure
Normal 123 psi (8.6 kg/cm2 )
Minimum 109 psi (7.7 kg/cm2 )
Maximum Variation Between Cylinders 22 psi (1.5 kg/cm2 )