HIGH OIL CONSUMPTION/LEAKAGE [SKYACTIV-G]
HIGH OIL CONSUMPTION/LEAKAGE [SKYACTIV-G]
SM2334617
id0103s4890300
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Troubleshooting item |
High oil consumption/leakage |
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Description
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• Oil consumption is excessive.
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Possible cause
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• Improper oil level gauge
• Improper engine oil viscosity
• Oil leakage
• PCV valve malfunction
• Engine internal parts malfunction
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System wiring diagram
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• Not applicable
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Connector diagram
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• Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
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1
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INSPECT ENGINE OIL AND RELATED PARTS
• Inspect the following:
• Is the installation condition normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location, then repeat from Step 1.
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2
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INSPECT FOR ENGINE OIL LEAKAGE
• Inspect for engine oil leakage from the outside of the engine.
• Is there engine oil leakage?
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Yes
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Repair or replace the malfunctioning location and perform the repair completion verification.
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No
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Go to the next step.
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3
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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 (WITH CYLINDER DEACTIVATION (US))].) (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
• Is the PCV valve normal?
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Yes
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Inspect for internal engine wear, damage.
• Cylinder
• Piston ring
• Intake/exhaust valve
• Cylinder head gasket
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No
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Replace the PCV valve and perform the repair completion verification.
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Repair completion verification 1
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VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Has the malfunction symptom been eliminated?
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Yes
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Complete the symptom troubleshooting. (Explain contents of repair to customer)
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No
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
• If the CAN communication is normal, perform the diagnosis from Step 1.
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Repair completion verification 2
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VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING
• Verify repair information and verify that there is a new calibration in the PCM.
• Is there a new calibration in the PCM?
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Yes
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Perform the PCM reprogramming and verify if the malfunction symptom was corrected.
• If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
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No
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Replace the PCM.
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