2008 - MX-5 - Engine

POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [LF]

1. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF].)

2. Remove the PCV valve.

3. Verify that there is no airflow when pressure is applied to port A.

• If there is airflow, replace the PCV valve.

4. Verify that there is airflow when vacuum is applied to port A.

• If there is no airflow, replace the PCV valve.