Compression Check (With Scan Tool)
Perform KOER CYLINDER CONTRIBUTION SELF-TEST under QUICK TEST in SELF-DIAGNOSTICS - EEC V - DIESEL - 7.3L article. Service any DTCs that are present. The following are possible causes for failing this test:
- Broken Compression Rings
- Burnt Or Bent Valves
- Bent Push Rods
- Bent Connecting Rods
- Damaged Rocker Arms
- Faulty Fuel Injector Assembly