From: "Geza Polony" <gezapolony@SBCGLOBAL.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Wednesday, June 20, 2007 8:48 PM Subject: Re: Aux Air Valve becoming available as reman
> But the aux air entry into the throttle body is before the butterfly > valve. > Wouldn't the butterfly valve control the air flow no matter what you > inject > on the other side? Humm... I'm talking about the aux air regulator that exists on air-cooled Vanagons. This "plumbing" for this regulator is as follows: hose from "S" boot allows metered air to pass to the aux air regulator which then allows this air to pass into the air distribution box which is *after* the throttle body. There's no entry point for air from the aux air regulator into the throttle body itself. When the aux air regulator is open there's another pathway for metered air to enter the engine. When the aux air regulator is closed then the position of the butterfly valve alone controls how much air is allowed into the engine. Tom Young |
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