Engine Compression
Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| Prizm | 9.5:1 | |
| Prizm GSi | 10.3:1 | |
| Normal Compression Pressure | 191 psi (13.0 kg/cm2 ) | |
| Minimum Compression Pressure | 142 psi (10.0 kg/cm2 ) | |
| Maximum Variation Between Cylinders | 14 psi (1.0 kg/cm2 ) | |