Engine Compression

WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 1992 Saturn SL2, 1992 Saturn SL1, 1992 Saturn SL, 1992 Saturn SC, and 1992 Pontiac Sunbird. However, it is still accessible from the selected car via links, so may be relevant.

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

COMPRESSION SPECIFICATIONS

Application

Specification

Compression Ratio

1.9L

VIN 7

9.3:1

VIN 9

9.5:1

2.0L

9.2:1

2.2L

9.1:1

2.3L

VIN A

10.0:1

VINs D & 3

9.5:1

2.5L

8.3:1

Normal Compression Pressure

Except 1.9L

⁽¹⁾

1.9L

185-205 psi (13-14.0 kg/cm² )

Minimum Compression Pressure

Except 1.9L

⁽¹⁾

1.9L

180 psi (12.7 kg/cm² )

⁽¹⁾	Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm² ).