PCV Valve?
Elder User
Joined: Nov 2003
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Regarding the above post.
Yes, the PCV is just about impossible to get at on the V6 without removing the air manifold. That's why it is a good idea when you have the plugs changed that you change or have your mechanic change the PCV valve. With the air manifold removed it very easy to reach and get out. I had mine changed at 110,000 miles when I had the plugs changed.
And yes, the plugs lasted that long and would of gone longer if need be, that is how good Ford designed the ignition and fuel injection system on this engine.
Yes, the PCV is just about impossible to get at on the V6 without removing the air manifold. That's why it is a good idea when you have the plugs changed that you change or have your mechanic change the PCV valve. With the air manifold removed it very easy to reach and get out. I had mine changed at 110,000 miles when I had the plugs changed.
And yes, the plugs lasted that long and would of gone longer if need be, that is how good Ford designed the ignition and fuel injection system on this engine.
New User
Joined: Feb 2012
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It's probably NOT the PCV valve or attaching hose...
The Positive Crankcase Ventilation Tube ELBOW (the 45 degree rubber piece-connector) that comes off the Manifold can collapse. After several thousands of miles it becomes mush from the oil and vapor...the vacuum from the engine will literally cause the ELBOW to close in on itself and collapse, not allowing the air to be pulled from the crakcase to the manifold, there is usually nothing wrong with the PCV valve itself.
The part must be purchased as part of an esembly, which is P/N 6758-A. It is listed for a little over $38 at FordParts.com. Too bad I already opened the package on the wrong tube I purchased : (
Ray
Last edited by raymos50; Feb 4, 2012 at 12:29 PM. Reason: removed incorrect part number.
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Unless you go along time without changing the engine oil and run dirty oil in your vehicle, changing the PCV valve is usually unnecessary. My mechanic told me once unless the valve is defective from the beginning, there is little chance of it malfunctioning, but heavy dirty oil blowing through that valve could clog it up with particles from the dirty oil. If you change your oil regularly, like every 3500 or 4000 miles, the PCV valve should last the life of the vehicle...
What we used to do and you can still do it today if you want, is clean the valve in a solvent. Remove the valve from the vehicle, and place in bowl filled with gasoline or kersosene, shake it around in the solvent and some particles may be seen being dispersed. As long as you hear the "ball" inside the valve moving freely, there is nothing wrong with it. Re-install the valve for another 60,000 miles or whatever...
PS: Do not use gasoline if any part of the valve is made of plastic, some PCV valves have plastic hose connectors attached to them...Use solvent that will not harm plastics, some carburator (sp) cleaners are safe to use on plastics..
What we used to do and you can still do it today if you want, is clean the valve in a solvent. Remove the valve from the vehicle, and place in bowl filled with gasoline or kersosene, shake it around in the solvent and some particles may be seen being dispersed. As long as you hear the "ball" inside the valve moving freely, there is nothing wrong with it. Re-install the valve for another 60,000 miles or whatever...
PS: Do not use gasoline if any part of the valve is made of plastic, some PCV valves have plastic hose connectors attached to them...Use solvent that will not harm plastics, some carburator (sp) cleaners are safe to use on plastics..
Then I found this thread and the post above that says as long as you change your oil regularly and keep it clean... "the PCV valve should last the life of the vehicle".
Do people here agree still agree with this. Is Ford just being overly caution? Should you change the PCV valve at 100K (115K in my case), or if it's ok, just let it be? Thanks!
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[bump... see my post just above]
So thoughts on if I need to replace the PCV valve? I noticed that TonyFord said his mechanic said it could last the life of the care, but then later in this thread said "I had mine changed at 110,000 miles when I had the plugs changed."
My mechanic said he wouldn't replace it if it didn't need to be replaced. Should I tell him to replace it anyways? Thoughts on this?
So thoughts on if I need to replace the PCV valve? I noticed that TonyFord said his mechanic said it could last the life of the care, but then later in this thread said "I had mine changed at 110,000 miles when I had the plugs changed."
My mechanic said he wouldn't replace it if it didn't need to be replaced. Should I tell him to replace it anyways? Thoughts on this?
Hotshot
Joined: Jan 2004
Posts: 19,763
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From: St Louis
A Motorcraft PCV valve costs about $10 from rockauto and takes all of one minute to replace while the intake manifold is off.
OTOH, if it fails, you have to pay for the labor to take the intake back off again.
You decide.
OTOH, if it fails, you have to pay for the labor to take the intake back off again.
You decide.
New User
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update: Per the advice here, I had the mechanic replace the PCV valve when he was replacing the plugs. Fingers crossed the new one is just as good as the old one.
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