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Date:         Sun, 11 Oct 2009 22:34:49 -0400
Reply-To:     John Meeks <vanagon@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Meeks <vanagon@GMAIL.COM>
Subject:      Re: Anyone know why VW discontinued the square pre-filter?
Comments: To: neil n <musomuso@gmail.com>
In-Reply-To:  <c4e7c5f90910111905m163e6ea1y62bdbd79b0288332@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

On Sun, Oct 11, 2009 at 10:05 PM, neil n <musomuso@gmail.com> wrote

> > On my '81 (also has the smaller outlet on tank), the main reason I > omitted the square filter and "upgraded" to a "can" filter post pump > was to see if it would quell the intermittent fuel pump noise. Since > pump is pretty new, and tank et al is too, I am almost certain the > noise is due to pump cavitation. FWIW, in cooler climes this "upgrade" > seemed to help reduce the noise. But recently, while traveling in > hotter climes, the fuel pump was pretty noisy at idle when engine up > to temp, and restarted. And with all the wind noise and Steely Dan > blaring away, couldn't hear if pump noisy while driving. I would > suspect it was at least intermittently noisy. In colder weather, it > seems quieter overall though. > > Just my experiences so far. > > Neil,

Do you attribute the possible cavitation to the smaller tank outlet? What did you use to adapt the smaller tank outlet to the fuel pump?

Thanks, John


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