










| Cause | Correction | |
| Coolant in the oil, internal engine component leaks |
Refer to Troubleshooting Logic for coolant loss. |
|
| Excessive oil sludge |
Review oil and filter change intervals. |
|
| Make sure the correct oil is being used. |
||
| Fuel in the oil, engine operating too cold |
Review the operation for excessive idling resulting in the engine running below normal temperature. |
|
| Fuel pump seal leaking |
Replace the pump. |
|
| Injector needle valves not sealing |
Locate and replace malfunctioning injector. |