PCV Valve Replacement
How are pcv valve issues diagnosed?
Understanding what the PCV valve does make diagnostics a breeze for anyone. If the technician suspects the PCV valve has failed, he will remove the valve, and use his hand-help pump to apply vacuum, then forced air, to see how the PCV reacts. If air can freely move through the valve in the intended direction, it is working properly. The valve has failed the test if air moves through in both direction or neither direction, or if air only moves in the wrong direction.
How is a pcv valve replaced?
Replacing the PCV valves can take seconds on some vehicles, and even an hour or two on others. In all cases, replacing the part is easy, but accessibility is not always on the technician's side. Vehicle are purpose-built, and most are built to be economical and reliable. This means placing components that frequently fail in expected positions, and unobstructed from removal. For vehicles that are built for high-luxury, performance, or off-road use, the placement of components is strictly for the purpose of enhancing performance, and may be very complicated to service.
