(Table 127, contd)
Troubleshooting Test Steps
Values Results
3. Cylinder Head and 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.
B. Check the cylinder head for flatness. Refer to Systems Op-
eration, Testing and Adjusting, “Cylinder Head - Inspect” for
the correct procedure.
C. Check the mating face of the cylinder head for faults and
signs of leakage. If a fault is found, replace the cylinder head.
If signs of leakage are found, determine the cause of the leak-
age. Refer to Systems Operation, Testing and Adjusting, “Cyl-
inder Head - Inspect” for the correct procedure.
D. Check the internal core plugs in the cylinder head for signs
of leakage.
Cylinder head
and gasket
Result: The cylinder head gasket is faulty or shows signs of
leakage.
Repair: Check for faults in the corresponding areas of the cyl-
inder head and cylinder block.
Result: The cylinder head is not within specification for
flatness.
Repair: Install a new cylinder head. Refer to Disassembly and
Assembly, “Cylinder Head - Install” for the correct procedure.
Result: The cylinder head shows signs of a fault or leakage.
Repair: Install a new cylinder head. Refer to Disassembly and
Assembly, “Cylinder Head - Install” for the correct procedure.
Result: An internal core plug in the cylinder head shows signs
of leakage.
Repair: Replace the faulty core plug.
Result: The cylinder head is OK.
Proceed to Test Step 4.
4. Cylinder Block
A. Inspect the top face of the cylinder block for faults and
signs of leakage.
Cylinder block Result: The top face of the cylinder block has a fault.
Repair: Replace the cylinder block.
Result: The top face of the cylinder block shows signs of
leakage.
Repair: Determine the cause of the leakage. Refer to Sys-
tems Operation, Testing and Adjusting, “Cylinder Block - In-
spect” for the correct procedure.
Result: The cylinder block is OK.
Repair: Install the cylinder head. Refer to Disassembly and
Assembly, “Cylinder Head - Install”.
Remove the oil filter element. Install a new engine oil filter ele-
ment. Fill the engine with clean engine oil to the correct level.
Refer to the Operation and Maintenance Manual, “Engine Oil
and Filter - Change” for more information.
Fill the cooling system. Refer to the Operation and Mainte-
nance Manual for more information.
If coolant is found in the oil again, contact the Dealer Solutions
Network (DSN).
UENR4469-36 239
Symptom Troubleshooting
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