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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2004 Posts: 241 'Bolter | | 'Bolter Joined: Sep 2004 Posts: 241 | I have a pcv valve and hose connected to the intake from the side of the valve cover. I also have a breather hose running from the top of the valve cover to the top of the air cleaner. There is a breather cap on the valve cover too.
Is the breather cap on the valve cover creating a needless vacuum leak? I haven't noticed a difference in idle or performance. Just wondering if I should use a standard valve cover cap or does it matter if I'm venting in more air?
Thanks.
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