Engine Compression
Test compression with all spark plugs removed and engine at normal operating temperature. Crank engine through at least 5 compression strokes before recording reading.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| 5.0L 2-Bbl. | 8.4:1 | |
| 5.0L EFI | 9.0:1 | |
| 5.8L | 8.3:1 | |
| 7.5L | 8.0:1 | |
| Max. Variation Between Cylinder | Less Than 25% | |