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Are PCVs supposed to be noisy?

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Old May 7, 2012 | 05:30 PM
  #11  
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Originally Posted by Ham Bone
It's more apparent at idle, but Im pretty sure I can hear it at speed most of the time. What can a bad PCV valve do?
Make you think your plenum gasket is blown.
 
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Old May 7, 2012 | 05:31 PM
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Bad valve either sticks shut, in which case you blow out gaskets.... or, sticks open, in which event, you suck lots of oil. Wrong flow rate can cause excessive oil consumption as well.
 
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Old May 7, 2012 | 05:41 PM
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Originally Posted by stewie01
Make you think your plenum gasket is blown.
Just fixed it

Originally Posted by HeyYou
Bad valve either sticks shut, in which case you blow out gaskets.... or, sticks open, in which event, you suck lots of oil. Wrong flow rate can cause excessive oil consumption as well.
So I guess theres no real way to test I then
 

Last edited by Ham Bone; May 7, 2012 at 05:42 PM. Reason: Magic
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Old May 7, 2012 | 05:46 PM
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No, not really.... aside from replacing it, again... or having a bunch of expensive equipment.
 
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Old May 7, 2012 | 05:48 PM
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Darn why does all the equiment have to be expensive. I'm about to just put the old one back in until I get a new one
 
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Old May 8, 2012 | 12:55 AM
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a bad PCV would put oil in the intake, just a small amount and tick.. lol.. if you bought it from the dealer, take it to the dealer and see if a mechanic will just listen to see if it sounds like its working properly since you think it might be bad, wont (or shouldnt..) charge you anything for it..
 
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Old May 8, 2012 | 08:59 AM
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Could it also be that you have something else going on with the engine to cause the pvc to frantically open and close and tap hard in the housing like its doing like serious blowby pressure? the pvc is just a check valve of sorts.

I suppose it could somehow be defective and too loose but honestly its a metal slug of a preditermined weight designed to lift and drop inside the plastic housing allowing air to flow one way... thats it... if its ticking maybe there is something funky going on with the flow its trying to control...

when they wear out they usually either leak or stick...

EDIT*** just did a quick search...apparently its common for new ones to sometimes do this as they break in...others said they just replaced them and the ticking went away with replacementso....
at least you know its working and not sticking
 

Last edited by Augiedoggy; May 8, 2012 at 09:07 AM.
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Old May 8, 2012 | 09:06 AM
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Originally Posted by Augiedoggy
Could it also be that you have something else going on with the engine to cause the pvc to frantically open and close and tap hard in the housing like its doing like serious blowby pressure? the pvc is just a check valve of sorts.

I suppose it could somehow be defective and too loose but honestly its a metal slug of a preditermined weight designed to lift and drop inside the plastic housing allowing air to flow one way... thats it... if its ticking maybe there is something funky going on with the flow its trying to control...

when they wear out they usually either leak or stick...
Well what kinda funk could be going on? Any ideas?
 
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Old May 8, 2012 | 10:39 AM
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Originally Posted by Ham Bone
Well what kinda funk could be going on? Any ideas?
did you see my edit? I added about the time you posted this...
 
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Old May 8, 2012 | 03:44 PM
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Originally Posted by Augiedoggy
did you see my edit? I added about the time you posted this...
I do now. Sorry I posted like right before you edited
 
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