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Home >> Dodge and Ram >> 1986 >> Caravan Base, 2.6 G >> Repair and Diagnosis (Single Page) >> Engine Performance >> Adjustment >> Tune-Up - 4-CYL >> Testing >> Engine Compression

Engine Compression

Using a remote starting switch, disconnect coil wire from distributor and secure to a good ground. Check the compression pressure at cranking speed with engine warm, the spark plugs removed and throttle valve wide open.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
2.2L 9.5:1
2.6L 8.7:1
Compression Pressure
2.2L (1) 100 psi (7.03 kg/cm2 )
2.6L 149 psi (10.48 kg/cm2 )
Max. Variation Between Cylinders
2.2L 25%
2.6L 15 psi (1.05 kg/cm2 )
(1) Service limit minimum compression.