Engine Compression
Disconnect wire at stop valve on injection pump. Remove vacuum pump and pump plunger. Clean fuel delivery pipes, remove pipes, and plug all openings. Remove injectors and heat shields. Place heat shield back in injector opening. Install compression tester adapter (5191). Connect compression tester.
COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 23.0:1 |
| Normal Compression Pressure | 455 psi (32 kg/cm2 ) |
| Minimum Pressure | 341 psi (24 kg/cm2 ) |
| Maximum Variation Between Cylinders | 114 psi (8 kg/cm2 ) |