Engine Compression
Test compression pressure with engine at normal operating temperature. Remove all spark plugs. Set throttle valve wide open.
COMPRESSION SPECIFICATIONS
| Application | Specification | |||
|---|---|---|---|---|
| Compression Ratio | ||||
| 2.8L | 8.9:1 | |||
| 3.1L (VIN T) | 8.8:1 | |||
| 3.1L (VIN V) | (1) | |||
| 3.8L (VIN C) | 8.5:1 | |||
| Compression Pressure | 100 psi (7 kg/cm2 ) min. | |||
| Max. Variation Between Cylinders | 30% | |||
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