Engine Compression
Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open. The DME master relay and/or fuel pump relay MUST be pulled out for compression test. See ADJUSTMENTS - 4.0L V8 article for additional information.
COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 10.0:1 |
| Compression Pressure | 142-156 psi (10-11 kg/cm2 ) |