Question: I'm working on my Ford E-150 van with a 4.2-liter. Can you tell me the location of the PCV valve for this engine? I took the air housing covers and the engine cover off looking for it, but ...

The PCV valve (positive crankcase ventilation valve) is a vital part of the emissions controlsystem on most vehicles. Not every vehicle has a PCV valve, but most do. If yours has one, and if your ...

The PCV valve can fail due to age or premature blockage from oil with sludge. Hi Paul, I own a 2004 Ford Explorer which has been running well until recently when the engine started misfiring and ...