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Home >> Subaru >> 1990 >> Justy DL >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Engine Controls - Adjustments - 3-CYL >> Engine Mechanical >> Engine Compression
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Engine Compression

Check engine compression with engine at normal operating temperature at 350 RPM, all spark plugs removed and throttle valves wide open. All fuel injector harness connectors should be disconnected.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.1:1
Compression Pressure 135-156 psi (9.5-11.0 kg/cm2 )
Maximum Variation Between Cylinders 28 psi (2.0 kg/cm2 )