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Home >> Subaru >> 1989 >> XT6 2.7 9, Automatic >> Repair and Diagnosis >> Engine Performance >> Adjustments - V6 >> Engine Mechanical >> Engine Compression

Engine Compression

Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle valves wide open and at specified cranking speed (350 RPM).

6-CYLINDER COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.5:1
Compression Pressure
Normal 168 psi (11.8 kg/cm
Minimum 139 psi (9.8 kg/cm
Maximum Variation Between Cylinders 28 psi (2.0 kg/cm