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 […]
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