Date:         Wed, 21 Apr 2010 16:28:16 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: More Fuel Pump Weirdness - Has Mercury gone retrograde again?
Comments: To: Pat Sloan <pmsloan@SHAW.CA>
In-Reply-To:  <69CF5EBE84F5427EBCA3A2CF93942E4D@PC245562293221>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 03:27 PM 4/21/2010, Pat Sloan wrote:
>There is a universal fuel pump available, which does both the pulling (from
>the tank) and the pushing (into the engine). My mechanic wants to install
>this and it sounds sensible to me.

Does your mechanic know that the pump has to supply at least 50 psi
working pressure?

The standard pump pulls fuel from the tank very nicely -- it's a
positive-displacement pump and would likely pull at 100 psi except
that gasoline vaporizes at much less pressure.

On the gasoline tanks there's a filter "sock" over the outlet line
inside the tank which can get clogged.  I think the longterm solution
is a new tank, but blowing compressed air into the outlet can blow
some of the crud back into the tank.  I strongly suspect that this is
your issue.

Yours,
David