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Engine Compression

Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.1:1
Compression Pressure
Normal 120-150 psi (8.3-10.5 kg/cm2 )
Maximum Variation Between Cylinders 30 psi (2.1 kg/cm2 )