C11, C13, C15, and C18 Industrial Engines Exhaust System Contains Oil Caterpillar


Exhaust System Contains Oil
`
1.1. Probable Causes
2.1. Recommended Actions

Probable Causes

  • Active or logged codes

  • Engine oil level

  • Failed turbocharger seals

  • Worn valve guide seals or faulty valve guide seals

  • Worn valve guides

  • Worn piston rings

  • Extended idle times

Recommended Actions

Note: Replacing the DOC and DPF is recommended if there is oil in the exhaust.

Table 1
Troubleshooting Test Steps  Values  Results 

1. Check for Active Diagnostic Codes
A. Establish communication between Cat® Electronic Technician (ET) and the Electronic Control Module (ECM). Refer to Troubleshooting, Electronic Service Tools, if necessary.
B. Download the "Product Status Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes. Troubleshoot any active codes before continuing with this procedure. 

Active Codes 

Result: Active codes are present.

Troubleshoot the active code.

Result: No active codes are present.

Proceed to Test Step 2. 

2. Check the Engine Oil Level and Obtain an Oil Sample

A. Check the oil level and obtain an oil sample. If the oil level is high, take an oil sample to check for fuel dilution. Refer to Troubleshooting, Oil Contains Fuel, if fuel is present.
 

Oil
 

Result: The engine oil sample shows moitor or action required.

Make necessary repairs.

Result: The engine oil sample and oil level are OK.

Proceed to Test Step 3.

Result: The engine oil level is not at the correct level.

Determine root cause of why the oil level was high or low.
 

3. Failed Turbocharger Seals

A. Check the inlet manifold and the exhaust manifold for oil.
 

Turbo Seals
 

Result: Oil is present in the inlet or exhaust manifold.

Repair: Replace the turbocharger. Verify the repair.

Result: Oil is not present in the inlet or exhaust manifold.

Proceed to Test Step 4.
 

4. Worn Valve Guide Seals or Faulty Valve Guide Seals

A. Inspect the valve guide seals for wear and for damage.
 

Valve Guide Seals
 

Result: The valve guide seals are damaged.

Repair: Replace the valve guide seals. Verify the repair.

Result: The valve guide seals are not damaged.

Proceed to Test Step 5.
 

5. Worn Valve Guides

A. Inspect the valve guides for wear. Refer to the Specification manual for the maximum permissible wear of the valve guides.
 

Valve Guides
 

Result: The valve guides are worn.

Repair: If necessary, recondition the cylinder head. Verify the repair.

Result: The valve guides are not worn.

Proceed to Test Step 6.
 

6. Worn Piston Rings

A. Piston rings that have excessive wear can cause too much pressure in the crankcase. The additional pressure in the crankcase will cause more than the normal amount of crankcase blowby from the crankcase breather. Use the following service tools, along with Software License, NETG5044:

1. 285-0900 Blowby Tool Gp (SMALL ENGINE)
2. 348-5430 Multi-Tool Gp

B. Inspect piston rings
 

Piston Rings
 

Result The piston rings are worn.

Repair: Replace the piston rings. Verify the repair.

Result The piston rings are not worn.

Proceed to Test Step 7.
 

7. Extended Idle Times

A. Extended idle times will allow oil to pass into the exhaust system.
 

Idle Times
 

Result The idle times are extensive.

Repair: Reduce the idle times.

STOP 

If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).

Information System:

C9.3 Engines for Caterpillar Built Machines Crankcase Fumes Disposal Tube Has Oil Draining
C13, C15, and C18 Tier 4 Interim Engines System Overview
C11, C13, C15, and C18 Industrial Engines General Information
C13 Engines for Caterpillar Built Machines Air Cleaner - Remove and Install
C13, C15, and C18 Tier 4 Interim Engines Fuel Consumption Is Excessive
C9.3 Engines for Caterpillar Built Machines Fuel Filter Is Restricted
C15 and C18 Tier 4 Final Engines Air Inlet and Exhaust System
C3.4B Industrial Engine Cold Weather Starting
C9.3 Engines for Caterpillar Built Machines Fuel Priming Pump - Remove and Install
2009/05/18 Turbocharger Compressor Wheel {1052, 1053}
2009/06/01 Correction to System Operation Testing and Adjusting , "Piston Pump (Hydraulic Fan) Pressure - Test and Adjust" {5070}
2009/06/01 Correction to System Operation Testing and Adjusting , "Piston Pump (Hydraulic Fan) Pressure - Test and Adjust" {5070}
C13, C15, and C18 Tier 4 Interim Engines Exhaust Temperature Is High
C13 Engine for Caterpillar Built Machines Engine Control Module - Remove and Install
C13, C15, and C18 Tier 4 Interim Engines Component Location
D7E Track-Type Tractor Power Train Track - Connect - SystemOne Track
C13, C15, and C18 Engines for Caterpillar Built Machines Factory Passwords
C9.3 Engines for Caterpillar Built Machines Electronic Service Tool Does Not Communicate
C9.3 Engines for Caterpillar Built Machines Test ECM Mode
904H Compact Wheel Loader Maintenance Interval Schedule
C9.3 Tier 4 Final Engines Fuel System
C9.3 Tier 4 Final Engines Air Inlet and Exhaust System
C9.3 Tier 4 Final Engines Fuel Filter Base
C13, C15, and C18 Tier 4 Interim Engines Diagnostic Trouble Codes