-----Original Message-----
From: CONAN@RALVM8.VNET.IBM.COM <CONAN@RALVM8.VNET.IBM.COM>
To: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Wednesday, November 04, 1998 9:23 PM
Subject: PCV function
>...silly questions... MY turn! MY turn!!
>
> Could someone please explain to me just what the function of the
PCV -valve-
>is? Why is a 'valve' needed?
> I understand that the purpose is to pull crankcase vapors back thru the
>intake to be burned with the fuel charge; but, why do we need this valve?
>Why not just an open hose from the crankcase vent to the air cleaner?
> Thanks!
> Ed in NC :-)
>
You need the valve to restrict PCV during periods of high manifold vacuum,
to increase PCV during high rev (low manifold vacuum) and to cut off PCV
during backfire.
Rick Kaplan
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