Engine Compression
Test compression pressure with engine at normal operating temperature. Remove all spark plugs. Set throttle and choke valves wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| 2.8L | |||
| 2Bbl. | 8.5:1 | ||
| MFI | 8.9:1 | ||
| 3.0L | 8.5:1 | ||
| 3.8L | 8.0:1 | ||
| 4.3L | 9.3:1 | ||
| Compression Pressure | 100 psi (7 kg/cm2 ) min. | ||
| Max. Variation Between Cylinders | 30% | ||