NO.16 HIGH OIL CONSUMPTION/LEAKAGE [SKYACTIV-G 2.5T]

id0103q4802200

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

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	ADD ENGINE OIL Note • Add engine oil to the MAX position because the validity of the engine oil consumption is determined. • Visually verify the engine oil level. • Is the engine oil level at the MAX position?	Yes	Go to the next step.
1		No	Add engine oil to the MAX position, then go to the next step.
2	DETERMINE IF ENGINE OIL CONSUMPTION IS REASONABLE • Record the current traveled distance. • Have the customer drive the vehicle 1,931 km {1,200 mile}. • Is the engine oil level appropriate?	Yes	Complete the symptom troubleshooting.(Explain to the customer that it is normal for the engine oil level to decrease from MAX to MIN after driving the vehicle 1,931 km {1,200 mile}.)
2		No	Go to the next step.
3	INSPECT ENGINE OIL VISCOSITY • Inspect the engine oil viscosity. • Is the engine oil viscosity appropriate?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location, then go to Step 7.
4	INSPECT FOR ENGINE OIL LEAKAGE • Inspect for engine oil leakage from the outside of the engine. • Is there engine oil leakage?	Yes	Repair or replace the malfunctioning location, then go to Step 7.
4		No	Go to the next step.
5	DETERMINE IF MALFUNCTION CAUSE IS DUE TO PCV VALVE OR INTERNAL ENGINE MALFUNCTION • Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.5T].) • Is the PCV valve normal?	Yes	Inspect for internal engine wear, damage. • Cylinder • Piston ring • Intake/exhaust valve • Cylinder head gasket ? If there is any malfunction: • Repair or replace the malfunctioning location, then go to the next step.
5		No	Replace the PCV valve, then go to the Step 7. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
6	VISUALLY INSPECT THE TURBOCHARGER • Remove the parts necessary to inspect the turbocharger without removing the turbocharger. (See DYNAMIC PRESSURE TURBO REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) • Visually inspect for the oil leakage inside turbocharger compressor and turbine housing. • Is there any leakage?	Yes	Replace the intake air system parts, then go to the next Step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
6		No	Replace the dynamic pressure turbo. (See DYNAMIC PRESSURE TURBO REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
7	Verify the test results. • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.5T].) • If a 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, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)