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Engine Compression

Perform compression test with wide open throttle and oil temperature not less than 140°F (60°C). Remove all spark plugs and allow about 12 piston strokes per cylinder test.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.3:1
Compression Pressure
Normal 142-184 psi (10-13 kg/cm2 )
Minimum 107 psi (7.5 kg/cm2 )
Max. Variation Between Cylinders 22 psi (1.5 kg/cm2 )