Positive Crankcase Ventilation (PCV) Valve Inspection [L3]
WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the negative battery cable.
- Remove the intake manifold, (see INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3] .)
- Remove the PCV valve.
- Blow through the valve and verify that air flows as specified.
- If not as specified, replace the PCV valve.
Specification
AIRFLOW CONDITIONS
| Condition | Airflow |
|---|---|
| Air applied from port A to B | Yes |
| Air applied from port B to A | No |