16

HIGH OIL CONSUMPTION/LEAKAGE

DESCRIPTION

• Oil consumption is excessive.

POSSIBLE CAUSE

• Improper dipstick

• Improper engine oil viscosity

• Oil leakage

• PCV valve malfunction

• Engine internal parts malfunction

STEP

INSPECTION

RESULTS

ACTION

1

• Inspect the following:

• Proper dipstick

• Proper engine oil viscosity

• Engine oil level

• Is there any malfunction?

Yes

Service if necessary.

• Repeat this step.

No

Go to the next step.

2

• Inspect for engine oil leakage 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.

3

• Inspect the PCV valve.

  (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the PCV valve.

(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

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 the removed parts.

4

Verify the test results.

• If normal, return to the diagnostic index to service any additional symptoms.

  (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.5].)

• If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform 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.