LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 1985 >> Nova CL, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Adjustment >> Tune-Up - 4-CYL >> Engine Compression

Engine Compression

Disconnect "BATT" terminal connector from distributor. Check compression pressure with engine warm, all spark plugs removed and throttle and choke valve wide open. Crank engine through 6 compression strokes before reading compression gauge.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.0:1
Compression Pressure 130-180 psi (9-12 kg/cm2 )
Max. Variation Between Cylinders Less than 30%