To remove the PCV valve, follow these steps:
1. Disconnect the hose from the PCV valve.
2. Use a 10mm wrench to loosen the bolt that holds the PCV valve in place.
3. Remove the PCV valve from the engine.
4. Inspect the PCV valve for damage or wear. If the PCV valve is damaged or worn, replace it with a new one.
To install the new PCV valve, simply reverse the steps above.