Where is the PCV valve located on a 2003 Mazda B2300?

2. Locate the engine block. It is the large metal block in the center of the engine compartment.

3. Find the valve cover. It is the black plastic cover on top of the engine block.

4. Remove the valve cover. There are four bolts that hold the valve cover in place.

5. Once the valve cover is removed, you will see the PCV valve. It is a small, cylindrical valve with a hose attached to it.

6. Disconnect the hose from the PCV valve.

7. Remove the PCV valve from the engine block. There is one bolt that holds the PCV valve in place.

8. Replace the PCV valve with a new one.

9. Reattach the hose to the PCV valve.

10. Replace the valve cover.