How to: Replace PCV valve, hose, oil separator Ford Duratec / Mazda L (Focus/Ranger/Mondeo/Mazda)

Simple how to: Replace the PCV valve, PCV hose, and oil/air separator on Ford Duratec and Mazda L / LF I4 engines. Positive crankcase ventilation components are often given insufficient maintenance attention. Valves can clog up and vacuum hoses often rupture or collapse. A split hose is a common cause of vacuum leaks on these engines. Search Amazon for parts*: * The car shown is a 2002 Mondeo but the Duratec and Mazda L/F engines all use the same design. Parts vary and in many cases were revised with improved designs, as touched on in the video. In my case for example, renewing the intake manifold itself would require upgrading all components through to the oil separator. (Using the above Amazon links helps support my channel and is appreciated!)