NO.16 HIGH OIL CONSUMPTION/LEAKAGE [L3 Turbo]SM2444516
NO.16 HIGH OIL CONSUMPTION/LEAKAGE [L3 Turbo]

id0103b4802200

16

HIGH OIL CONSUMPTION/LEAKAGE
DESCRIPTION
• Oil consumption is excessive.
POSSIBLE CAUSE
• Improper dipstick
• Improper engine oil viscosity
• PCV valve malfunction
• Engine internal parts malfunction
• Seal leakage at the compressor or turbine end of turbocharger (indicated by oil in housing on wheel)
• Oil leakage

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
Verify the following:
• Proper dipstick
• Proper engine oil viscosity
• Engine oil level
Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results.
Repeat this step.
No
Go to the next step.
2
Inspect the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 Turbo].)
Is there any malfunction?
Yes
Replace the PCV valve.
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 Turbo].)
No
Go to the next step.
3
Inspect the oil leakage from outside of the engine.
Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
4
Remove the parts necessary to inspect the turbocharger without removing the turbocharger.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)
Visually inspect for the oil leakage inside turbocharger compressor and turbine housing.
Is there any leakage?
Yes
Excessive amount of oil is found:
• Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 Turbo].)
Small amount of oil is found:
• Wipe the oil out of the vehicle, then go to the next step.
No
Go to the next step.
5
Is any engine oil found around oil pipes attached on the turbocharger center housing?
Yes
If oil leaks from damaged pipe:
• Replace the oil pipe, then install all removed parts in Step 4.
No
Inspect the internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings.
Repair or replace the malfunctioning part according to the inspection results, then install all removed parts in Step 4.
6
Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [L3 Turbo].)
• If the malfunction remains, inspect the related Service Information and perform the repair or diagnosis.
― If the vehicle is repaired, troubleshooting is completed.
― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.