Troubleshooting

Table 54
Troubleshooting Test Steps
Values Results
1. Engine Oil Cooler
A. Drain the engine lubricating oil and coolant from the en-
gine. Check for leaks in the oil cooler assembly.
Refer to Systems Operation, Testing, and Adjusting, “Cooling
System” for the correct procedure.
Oil level Result: Evidence of coolant in the oil system is identified.
Repair: Install a new oil cooler. Refer to Disassembly and As-
sembly, “Engine Oil Cooler - Remove” and Disassembly and
Assembly, “Engine Oil Cooler - Install” for the correct
procedure.
Result: No evidence of coolant in the oil system is found.
Proceed to Test Step 2.
2. Cylinder Head Gasket
A. Remove the cylinder head. Refer to Disassembly and As-
sembly, “Cylinder Head - Remove” for the correct procedure.
Inspect the cylinder head gasket for faults and any signs of
leakage.
Cylinder head
gasket
Result: The cylinder head gasket is faulty or shows signs of
leakage.
Repair: Install a new cylinder head gasket.
Result: The cylinder head gasket is OK.
Proceed to Test Step 3.
(continued)
UENR0612-07 113
Symptom Troubleshooting
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