pvc valve
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
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
Posts: 19,398
Likes: 1,139
From: Dyer, IN
Tech Contributor
Joined: May 2008
Posts: 3,100
Likes: 17
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.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
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...
