A Series Diesel Engine Troubleshooting Logic 44
Contaminated Lube Oil
Cause
Correction
Coolant in the Oil, Internal Engine
Component Leaks
Refer to Troubleshooting Logic for Coolant
Loss
OK
Excessive Oil Sludge
Review Oil and Filter Change Intervals
OK
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.
OK
Fuel Pump Seal Leaking
Replace the Pump.
Refer to Page 94, 120
OK
Injector Needle Valves Not Sealing
Locate and Replace malfunctioning
Injector.
Refer to Page 88.
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