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POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-X 2.0]

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Airflow Inspection

1. Disconnect the section (A) of the ventilation hose shown in the figure.

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2. Start the engine and verify that vacuum is applied to the end of the disconnected ventilation hose while idling.

• If vacuum is not applied to the ventilation hose, perform the procedure from Step 3.

Note

• If the PCV valve is operating normally, vacuum occurs in the ventilation hose, however, if the PCV valve is not operating normally, vacuum does not occur in the ventilation hose because the blow-by gas is circulated to the air hose from the ventilation hose.

• Verify the ventilation hose vacuum using the following methods:

― When the tip of your finger touches the end of the ventilation hose, it is suctioned by the hose.

― When a thin scrap of paper contacts the end of the ventilation hose, it is suctioned by the hose.

3. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

4. Remove the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

5. Verify that there is no airflow when pressure (5 kPa or more) is applied to port B.

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• If there is airflow, replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

6. Verify that there is airflow when vacuum is applied to port B.

• If there is no airflow, replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)