Engine Compression
Test compression with engine at normal operating temperature, spark plugs removed, throttle valve wide open and engine at cranking speed (300 RPM).
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | 9.3:1 | |
| Compression Pressure | ||
| New Engine | 178 psi (12.5 kg/cm2 ) | |
| Minimum | 125 psi (8.8 kg/cm2 ) | |
| Maximum Variation Between Cylinders | 7 psi (0.5 kg/cm2 ) | |