Engine Compression
WARNING: This page is about a different car, the 1996 Pontiac Firefly and 1996 Geo Metro. 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, with all spark plugs removed and throttle wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | 9.5:1 | ||
| Normal Compression Pressure | (1) 199 psi (14.0 kg/cm2 ) | ||
| Minimum Compression Pressure | (1) 156 psi (11.0 kg/cm2 ) | ||
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm2 ) | ||
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