Engine Compression
When making compression checks, disconnect ignition switch connector Pink wire from high energy ignition system. Remove air cleaner. Open throttle and choke fully. Remove all spark plugs. Crank engine through at least 4 compression strokes.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| 2.8L | 8.9:1 | |
| 4.3L | 9.3:1 | |
| Minimum Pressure | 100 psi (7.0 kg/cm2 ) | |
| Maximum Pressure Variation | 30% | |