14
Jan
If your PCV valve is installed directly into the crankcase or valve cover grasp it firmly with your needle nose pliers and pull it out. Now disconnect the vent hose that goes to the intake.
If a 14 turn design is used slide the valve into the valve cover and turn it clockwise until it locks securely in place.
How to install pcv valve. PCV stands for positive crankcase ventilation. The PCV system removes harmful oil vapors from the engine and prevents them from being released into the atmos. First locate the PCV valve.
In our example the valve is located on the passenger side oil fill tube. Now disconnect the vent hose that goes to the intake. Next twist the valve counterclockwise to release it from the oil fill tube.
First remove the hose that is connected to the top of the valve. If your valve is installed between two hoses you will be able to pull the valve out. If your PCV valve is installed directly into the crankcase or valve cover grasp it firmly with your needle nose pliers and pull it out.
It should come out with a little oomph. Look for signs of wear including hardening bulging perishing or corrosion and replace the old or damaged components. Then depending on your make or model of car screw the replacement PCV valve into place or snap it back into the grommet on the valve cover.
Reconnect the vacuum hose to the valve. Screw in the new valve. If the new valve screws into place do this by hand to avoid stripping the threads in the valve cover.
Make sure that the valve is seated securely it should stick just a little when you try to unscrew it again but dont over-tighten it. Reconnect the hose to the PCV valve. The Family Handyman automotive repair expert Rick Muscoplat will tell you what a positive crankcase ventilation PCV valve does how to test it and if needed how to replace it.
Pull the PCV valve from its housing and place your thumb over the PCV valve opening. You should feel it click. If the click sounds or feels mushy replace the valve.
The PCV positive crankcase ventilation valve is a one-way valve that recycles crankcase gases back into the engine to burn. The PCV Valve is often located on the valve cover on the engines top but it can also be located on a hose between the valve cover and the air intake filter. Just follow the hose on the top of the car engine and there is a big chance that you will find the PCV valve.
Some cars do also have an integrated PCV valve with the valve cover. On the opposite valve cover a PCV valve is routed with a hose over to manifold vacuum source often found on the back side of the carburetor. So the system pulls a small amount of vacuum from the intake manifold past the PCV valve and pulls in fresh air from the air cleaner.
How to Replace PCV Valve. Test the Valve and Replace it Accordingly. To replace a PCV valve you should first make sure if it really needs a replacement.
Get to the engine hood and open it up. There you need to locate the PCV valve that in most cases is located near the intake manifold in case you dont know where is the PCV valve. Install the new PCV valve into the valve cover or intake manifold depending on engine model.
For valves using a slip fit into the grommet a light coating of oil or silicone spray can aid in installation. If a 14 turn design is used slide the valve into the valve cover and turn it clockwise until it locks securely in place. The PCV valve is usually mounted in a grommet on a valve cover at the end of a hose or tube.
One way to check whether a PCV valve is functioning is to remove it from the hose or tube and shake it. On some engines access to the PCV valve is difficult. In these models you can remove the engine oil dipstick and seal the dipstick tube opening with a piece of tape.
With the engine at idle remove the cap from the oil filler on the valve cover. Then place a thin piece of cardboard over the opening. In the early 1960s the PCV valve became the new accepted method of relieving crankcase pressure while at the same time reducing emissions.
How A PCV Valve Works Whereas a road-draft tube vented crankcase vapors to the atmosphere a PCV valve functions differently. With a PCV valve gases are fed back into the. If the rubber grommet also appears worn or damaged a replacement is in order.
Screw in the new valve by hand or push it through the rubber grommet depending on the vavles design. If the valve is threaded in use a wrench or ratchet to tighten it down until its snug. Do NOT overtighten it.
Locate the PCV Valve. The PCV valve is located near the back right side of the engine aft of the oil fill cap with a hose coming out of it. Here is a little closer view.
And here is an even closer view. Use a Pliers to Remove the Hose Clamp. With a pliers squeeze the hose clamp and pull the hose off of the old PCV valve.