PCV valve q's
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Elder User
Joined: Aug 2006
Posts: 813
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From: foristell, missouri
PCV valve q's
do i need a pcv valve? i took mine off today at work cause it kept popping out of the hose and causing a vacuum leak. but i was wondering what it will do to my motor without it there. anything serious? my motor seems to idle a little smoother but higher without it ( about 1000 - 1100 rpms)
Elder User
Joined: May 2007
Posts: 754
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From: Solon, Ohio
You have to plug the hose that goes to the intake manifold,...........this will cure the idle problem.
If you don't have some type of breathing setup on the valve cover, oil will keep coming out, and just plain plugging it is bad.
If you don't have some type of breathing setup on the valve cover, oil will keep coming out, and just plain plugging it is bad.
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Elder User
Joined: Aug 2006
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From: foristell, missouri
Can I Just Run A Hose From The Valve Cover To The Air Cleaner, Will That Have Enough Suck To Pull The Extra Oil And Gunk Out. Should I Put A Filter Between The Cover And Air Cleaner.
Lead Driver
Joined: Jul 2007
Posts: 7,868
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From: Rhode Island
Leaving the PCV disconnected like that is causing you to basically have a huge vacuum leak, and let un filtered air into your engine.
The PCV is needed to ensure that oil the oil vapors leave the engine, just sticking a filter over the hole may not be enough.
Your best bet is to get a new hose/ PCV valve.
The PCV is needed to ensure that oil the oil vapors leave the engine, just sticking a filter over the hole may not be enough.
Your best bet is to get a new hose/ PCV valve.
Elder User
Joined: May 2007
Posts: 754
Likes: 1
From: Solon, Ohio
It's OK to run like that on a short term basis.
But I would also highly recomend getting a new PCV.
But I would also highly recomend getting a new PCV.
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From: foristell, missouri
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Don't run without a pcv valve, also don't plug the vacuum tee off the back of the manifold. I tried to plug the fitting off the manifold, and it created a surging idle. The computer needs to see the slight leak that the valve provides. If your worried about gunking up the filters, connect the pcv valve to the hose, connect this too the tee at the back of the manifold, and don't put it in the valve cover, use a breather on the cover.
Der Postmeister
Joined: Sep 2006
Posts: 6,859
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From: Long Beach, Calimexiforia
The rubber grommet on the valve cover it mounts into is common stock at almost every auto parts store @ 1 buck. If it pops out of the new one too and the valve itself is not clogged up, you have alot bigger problem you should be worried about!(abnormally excessive positive crank case pressure I think its called, having to do w/ one of the possible results of a head gasket failure. Someone will plobibly pick up on my intended reference to and explain it more proficiently.