Repair 7

How Do I Change a PCV Valve on a 2007 Jeep Liberty

The Positive Crankcase Ventilation (PCV) valve prevents vapors from leaking from your 2007 Jeep Libertys engine into the atmosphere. The PCV valve forces harmful vapors back into the combustion chambers, so that they burn off during the fuel combustion cycle. When your Libertys "check engine" light comes on, or when your vehicle fails an emissions test, the PCV valve most likely has failed. Buy a replacement valve from an auto parts store.

Instructions

1

Raise the hood of your Liberty and rest it on the prop rod. Locate the PCV valve protruding from the back of the left cylinder head.

2

Pull the rubber hose straight back off the end of the PCV valve. Unscrew the PCV valve from the mounting area, by hand. Discard the old valve. Thread the replacement PCV valve into the mounting area, by hand, until it is secure.

3

Push the rubber hose back onto the end of the new valve. Push the hose back until it stops, making sure it is tight. Close the hood of the Liberty.