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, followed by compression tester adapter 5191. Connect compression tester and test compression.
COMPRESSION SPECIFICATIONS
| Compression Ratio | 23.0:1 | |
|---|---|---|
| Normal Compression Pressure | 485 psi (34.0 kg/cm2 ) | |
| Minimum Pressure | 400 psi (28.0 kg/cm2 ) | |
| Maximum Variation | ||
| Between Cylinders | 70 psi (5.0 kg/cm2 ) | |