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