Centinel System – Repair Manual – Lubricating Oil Sludge in the Crankcase Excessive

Bulk oil supply is contaminated

Check the bulk oil supply. Drain the oil and replace with noncontaminated oil. Replace the oil filters. Refer to Procedure 007-083.

Lubricating oil does not meet specifications for operating conditions

Change the oil and filters. Refer to 007-083. Use the oil type recommended in 018-003 of the Operation and Maintenance Manual, Signature and ISX Engines, Bulletin 3666251 or 018-003 Operation and Maintenance Manual, Industrial and Power Generation, QSX15 Engines, Bulletin 3666423.

Lubricating oil drain interval is excessive

Verify the correct lubricating oil drain interval. Refer to Section 2 in 102-002 of the Operation and Maintenance Manual, Signature and ISX Engines, Bulletin 3666251 or 102-002 Operation and Maintenance Manual, Industrial and Power Generation, QSX15 Engines, Bulletin 3666423.

Fuel grade is not correct for the application or the fuel quality is poor

Operate the engine from a tank of high-quality fuel. Refer to Procedure 018-002 in the Operation and Maintenance Manual, Signature and ISX Engines, Bulletin 3666251 or 018-002 Operation and Maintenance Manual, Industrial and Power Generation, QSX15 Engines, Bulletin 3666423.

Coolant temperature is below specification

Refer to the Coolant Temperature Below Normal symptom tree.

Lubricating oil is contaminated with coolant or fuel

Refer to the Lubricating Oil Contaminated symptom tree.

Crankcase pressure is excessive

Check for excessive blowby. Refer to the Crankcase Gases (Blowby) Excessive symptom tree.

Injector cup is damaged or is not correct

Check the injector cups for damage and for correct part numbers. Refer to Procedure 006-026.

Injector is malfunctioning

Replace the malfunctioning injector. Refer to Procedure 006-026.

Timing or fueling actuator malfunctioning

Replace the timing or fueling actuator Procedure 019-110 and 019-111 in the Troubleshooting and Repair Manual, CM870 Electronic Control System, Signature and ISX Engines, Bulletin 4021334, or 019-110 and 019-111 Troubleshooting and Repair Manual, Electronic Control System, Signature, ISX and QSX Engines, Bulletin 3666259, 019-110 and 019-111 Troubleshooting and Repair Manual, Power Generation Control Systems QSX15, QSK23, QSK45, QSK60, QSK78, and QST30 Series Engines, Bulletin 4021419.

Engine position sensor (EPS) or circuit is malfunctioning or wiring is not correct

Check the engine position sensor or circuit. Refer to Section TF and or Procedure 019-038 in the Troubleshooting and Repair Manual, CM870 Electronic Control System, Signature and ISX Engines, Bulletin 4021334, or ISX Fuel System Troubleshooting and Repair Manual, Bulletin 3666259, or Troubleshooting and Repair Manual, Power Generation Control Systems QSX15, QSK23, QSK45, QSK60, QSK78, and QST30 Series Engines, Bulletin 4021419 .

Engine is out of time

Check base engine timing. Refer to Procedure 001-088.