










| Cause | Correction | |
| Contaminated fuel |
Verify by operating the engine with clean fuel from a temporary tank. Drain and flush fuel supply tanks. |
|
| Worn or malfunctioning injection pump |
Visually check fuel delivery with an externally connected injector to one of the pump outlets. Replace the pump if fuel is not being delivered. |
|
| Injection pump out of time |
Check/time the pump. |
|
| Valves incorrectly adjusted |
Adjust valves. |
|
| One or more injectors worn or malfunctioning |
Check/replace injectors. |
|
| Engine compression low |
Perform a compression check to identity the problem. |