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The purpose of the PCV valve is to regulate the flow of crankcase fumes into the intake manifold where they can be burned. Prior to 1963, cars had no PCV and used road draft tubes that just left the hydrocarbon emissions from the crankcase out into the open air. The PCV valve also has a secondary role as a check valve, to prevent flow back into the crankcase. This prevents potential ignition of the crankcase fumes, should the engine backfire. The PCV system is also crucial for to proper engine sealing. The system alleviates crankcase pressure, which can push out on seals and gaskets, contributing to oil leaks.
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∙ 16y ago
Wiki User
∙ 18y agocontrols vacuum in crankcase to power assist brakes and keep the seals from blowing out of the engine
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Can oil be sucked up into the intake through the PCV valve on acceleration but not at idle?
yes replace the PCV valve it cheep ,,
How important to change PCV valve Nissan pickup 1994?
It is very important to change PCV valve. If valve is old it will plug or seize. This will cause oil pressure to rise and may cause leaks. Most likely the valve cover gaskets will leak if PCV valve is plugged.
Where can you find the PCV Valve on a 1999 Lexus ES300?
should be on top of valve cover This picture will help you find the PCV valve http://www.clublexus.com/forums/es300-and-es330-forum/418700-2001-lexus-es300-pcv-where-is-it.html What you really need to know is that if your engine has been desludged the L shaped plastic PCV valve would have been replaced with the metallic, straight screw in PCV valve first introduced in 2002.
May someone show me a diagram or pic of where the PCV valve is located on a 1985 Honda Prelude?
The PCV valve on your car is mounted on the valve cover and has a rubber hose that is connected to the fresh air intake.
Where is the PCV Valve on a 1987 Nissan Stanza?
It is at the top of the valve cover. Hope that heps!
How do you replace the PCV valve on your 1986 Chevrolet Nova?
Pull upward on the hose that the PCV valve is in. The PCV valve will pull out of the hose. The PCV valve is located in the valve cover.
How do you change ford 500 PCV valve?
Disconnect the PCV valve tube from the PCV valve.Disconnect the PCV valve electrical connector if it has one.Turn the PCV valve counterclockwise to remove from the valve cover.To install, reverse the removal procedure.
Where is the PCV valve located on a 2002 Nissan Altima 2.5?
Contacted the dealer and the 02 does not have an egr valve The original question was "where is the PCV valve located? An EGR stands for "exhaust gas recirculation" which is different from a PCV valve "positive crank case ventilation". Each serves a unique and different function within the engine. Therefore the original question remains unanswered! daaaaa... The PCV valve is located on the back side of the valve cover. You will see the hose that the valve is connected to, running out from the back of the valve cover. The actual PCV valve is screwed into the valve cover, and the hose will have to be disconnected to access the valve.
How do you change PCV valve on 2004 F-150?
Remove the PCV valve retaining screws. Remove the PCV valve hose. Reverse the process to install the new PCV valve.
Why does a PCV valve keep making a rattling sound?
The PCV valve has a check ball in it, That's what you are hearing. REPLACE PCV VALVE
Where is the PCV valve located on 1999 elantra 2.0DOHC?
The PCV valve is located in the valve cover
Where is the PCV valve located on a ford 2.9L?
The pcv valve is on the passenger side valve cover
What is the function of a valve in an engine?
To open and close a passage. Whether it is intake, exhaust, EGR, pcv, etc.
Location of a PCV valve on a 2007 Pontiac Torrent?
The PCV valve on q 2007 Torrent is made into the valve cover. It is not removable, the valve cover and PCV valve must be replaced together.
Where exactly is the PCV valve on a 2003 Honda civic LX?
PCV valve (A)
Does a Chevy 2500 HD have a PCV valve?
All engines have a PCV valve.
Where is PCV valve on 98 leganza?
Where is pcv valve on 1998 daewoo leganza
