ENGINE STARTS, IDLES ROUGH W/O UNUSUAL NOISE OR SMOKE TABLE
| Possible Cause | Correction |
|---|---|
| Incorrect slow idle adjustment | Reset slow idle adjustment, see ADJUSTMENTS |
| Leaking injection line | Check fittings and/or replace line |
| Plugged fuel return line | Remove restrictions |
| Air in lines to nozzles | Check line fittings |
| Air in injection pump | Check pump fittings and pump operation |
| Faulty nozzle | Replace nozzle, see SYSTEM/COMP TESTS |
| Improper or contaminated fuel | Remove and replace fuel |
| Uneven fuel distribution | Check fuel delivery system |
ENGINE STARTS, IDLES ROUGH W/O UNUSUAL NOISE OR SMOKE
ENGINE STARTS & IDLES W/EXCESSIVE NOISE AND/OR SMOKE TABLE
| Possible Cause | Correction |
|---|---|
| Incorrect pump timing | Adjust pump timing, see ADJUSTMENTS |
| Restricted Air Filter | Check and/or replace air filter |
| Air in injection lines to nozzles | Check fittings on lines |
| Faulty nozzle | Replace nozzle, see SYSTEM/COMP TESTS |
| Improperly installed high pressure lines | Remove and reinstall properly |
ENGINE STARTS AND IDLES W/EXCESSIVE NOISE AND/OR SMOKE
"RAPPING" NOISE FROM CYLINDERS
| Possible Cause | Correction |
|---|---|
| Air in fuel system | Check fuel delivery system for leaks |
| Air in high pressure lines | Check fittings for leaks |
| Nozzle sticking in open position | Inspect nozzle and/or replace |
| Low nozzle opening pressure | Check nozzle operation, see SYSTEM/COMP TESTS |
"RAPPING" NOISE FROM CYLINDERS
EXCESSIVE NOISE WITH BLACK SMOKE
| Possible Cause | Correction |
|---|---|
| Incorrect pump timing | Adjust pump timing, see ADJUSTMENTS |
| Incorrect pump housing pressure | Check pump for internal leaks |
| Defective injection pump | Replace injection pump, see SYSTEM/COMP TESTS |
EXCESSIVE NOISE WITH BLACK SMOKE