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Engine Compression

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1991 Plymouth Colt Vista, 1991 Plymouth Colt, 1991 Mitsubishi Pickup, 1991 Mitsubishi Montero, and 1991 Mitsubishi Mirage. However, it is still accessible from the selected car via links, so may be relevant.

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

COMPRESSION SPECIFICATIONS

Application (1) Specification
Compression Ratio
1.5L (VIN A) 9.4:1
1.6L (VIN Y) 9.2:1
1.8L (VIN T) 9.0:1
2.0L (VIN R) 9.0:1
2.0L (VIN U) 9.0:1
2.0L (VIN V) 8.5:1
2.4L (VIN W) 8.5:1
3.0L (VIN B) 10.0:1
3.0L (VIN C) 8.0:1
3.0L (VIN S) 8.9:1
Compression Pressure (2)
1.5L (VIN A) 137 psi (9.6 kg/cm2 )
1.6L (VIN Y) 171 psi (12.0 kg/cm2 )
1.8L (VIN T) 131 psi (9.2 kg/cm2 )
2.0L (VIN R) 137 psi (9.6 kg/cm2 )
2.0L (VIN U) 114 psi (8.0 kg/cm2 )
2.0L (VIN V) 119 psi (8.4 kg/cm2 )
2.4L (VIN W) 119 psi (8.4 kg/cm2 )
3.0L (VIN B) 139 psi (9.8 kg/cm2 )
3.0L (VIN C) 115 psi (8.1 kg/cm2 )
3.0L (VIN S) 119 psi (8.4 kg/cm2 )
(1) See ENGINE/VIN ID article.
(2) Maximum variation between cylinders is 14 psi (1.0 kg/cm2 )