Engine Compression
Prior to checking compression, be sure battery is fully charged to avoid battery run down. When turning engine over during test, 6 "puffs" per cylinder should be used to obtain reading.
NOTE:
DO NOT
add oil to cylinders during compression check as extensive engine damage will result.
- Remove air cleaner and install screen cover over air crossover. Disconnect electrical wire from fuel injection pump solenoid terminal.
- Disconnect glow plug wiring and remove all glow plugs. Use compression gauge (J-26999) to test individual cylinders.
CAUTION:
DO NOT
add oil to cylinders during compression check as extensive engine damage will result.
ENGINE COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 21.5:1 |
| Min. Compression Pressure | 300 psi (21 kg/cm2 ) |
| Max. Pressure Variation | 20% |