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Home >> Geo >> 1993 >> Storm Base, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Specifications >> Mechanical Checks >> Engine Compression

Engine Compression

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

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
SOHC 9.1:1
DOHC 9.7:1
Normal Compression Pressure
SOHC 159 psi (11.2 kg/cm2 )
DOHC 170 psi (12.0 kg/cm2 )
Minimum Compression Pressure (1)
Maximum Variation Between Cylinders 14 psi (1.0 kg/cm2 )
(1) Maximum variation between cylinders is 14 psi (1.0 kg/cm2 ).