B5.9G, B5.9LPG – Troubleshooting and Repair Manual – Coolant in the Lubricating Oil

Symptom Tree  t025

This is symptom tree t025
Cause Correction

Lubricating oil cooler is leaking

Check the lubricating oil cooler for coolant leaks and cracks. Refer to Procedure 007-003.

 

Cylinder head gasket is leaking

Check the cylinder head gasket. Refer to Procedure 002-021.

 

Air compressor cylinder head is cracked or porous, or has a leaking gasket

Inspect the air compressor cylinder head and gasket. Refer to Procedure 012-103 and 012-104 and the Master Repair Manual, Holset® Air Compressors, Bulletin 3666121.

 

Cylinder head is cracked or porous

Pressure-test the cylinder head. Refer to Procedure 002-004.

 

Cylinder head core and expansion plugs leaking or misassembled

Check cylinder head. Refer to Procedure 002-004.

 

Cylinder block is cracked or porous

Inspect the cylinder block. Refer to Procedure 001-026.

 

Turbocharger oil seal is leaking

Check the turbocharger compressor and turbine seals. Refer to Procedure 010-033.

 
Last Modified:  05-Jan-2004