pvc valve
Tech Contributor
Joined: Dec 2006
Posts: 10,962
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From: Van Buren Arkansas
Wounded Warrior Escort '11
Personally I would be checking it for cleanliness about every 50k miles or so, but that's just me. If you have more blow-by, then clean it or replace it more often.
Thread Starter
Advanced
Joined: Dec 2009
Posts: 87
Likes: 1
From: Los Alamitos California
thanks i just replaced it i have had the car about 2 years i dont know if the one i pulled out was factory or not .I will replace at every oil change they are only 3 bucks.
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Tech Contributor
Joined: May 2008
Posts: 3,100
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
Put a little silicone grease on the PCV valve where the hoses and heat sink clip attach.
It will make removal a whole lot easier next time.
It will make removal a whole lot easier next time.
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
That frequency of replacement is WAY overkill! Typically, PCV valves should be replaced when spark plugs are replaced, but considering that our spark plugs can last 100,000 miles, every 50,000 miles for PCV valve changes is reasonable.
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Melting Slicks
Joined: Apr 2009
Posts: 2,479
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Once cleaned, you first verify that the plunger moves freely when you shake it. Then, you blow into it. First from one side then the other. One side should allow the air to go through with very little restriction. When you blow into it from the opposite side, there should be no air getting through. That's it! Simple.
PS: You would be very surprised at how many new aftermarket PCV valves fail this test. Beware, some of them are very cheaply made.
PS: You would be very surprised at how many new aftermarket PCV valves fail this test. Beware, some of them are very cheaply made.
Last edited by Cybermind; Sep 28, 2010 at 06:03 AM.
Safety Car
Joined: Jul 2005
Posts: 3,572
Likes: 9
From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
I replaced mine with a late modle LS6 valley cover with the built in PVC and it works so much better to help keep oil out of the intake. Of course a catch helps too.
Like others have said, just clean it with some carb cleaner and blow it out. Make sure it rattles and it's not clogged or sticking.
Like others have said, just clean it with some carb cleaner and blow it out. Make sure it rattles and it's not clogged or sticking.
Pro
Joined: Mar 2004
Posts: 653
Likes: 0
I replaced mine with a late modle LS6 valley cover with the built in PVC and it works so much better to help keep oil out of the intake. Of course a catch helps too.
Like others have said, just clean it with some carb cleaner and blow it out. Make sure it rattles and it's not clogged or sticking.
Like others have said, just clean it with some carb cleaner and blow it out. Make sure it rattles and it's not clogged or sticking.
I've been researching this valley cover upgrade and bought one, but my block is an LS1 casting. Looks like there is some cutting of the block's interior involved, and I'm not comfy doing that to my engine.
I'm curious to know if the newer design LS6 valley cover will fit an LS1 block without all the cutting...
