Re: Converting three port fuel pump system to two port pump

[James Montebello <jamesm@xxxxxxxxxxxx>]

At least on my Alfetta, fuel goes from the tank to the electric pump,
from the electric pump to the SPICA pump, from the SPICA pump back to the
3rd port on the electric pump (then, presumably, back to the SPICA pump).
The return line would have to be plumbed into a tee between the tank and
the electric pump to use a two-port pump.  You can't just block off the
third port, as the return line never goes back to the tank.

jamesm

On Wed, 26 Mar 2003 AlfaNeely@domain.elided wrote:

>     The third port on the Alfetta fuel pump was a short circuit off the return line.  It sent hot fuel back to the engine.  Plugging it off was suggested years ago by Joe Benson (former AROC tech advisor) so that colder fuel from the tank would reach the engine.
>
> Ciao,
> Russ Neely
> Oklahoma City
>
>
> In a message dated 3/26/2003 2:50:00 PM Eastern Standard Time, owner-alfa-digest@domain.elided writes:
>
> > Date: Wed, 26 Mar 2003 10:40:32 -0800 (PST)
> > From: Ian Lomax <sfalfisto@domain.elided>
> > Subject: Converting three port fuel pump system to two port
> > pump
> >
> > I have found a working two-port Bosch fuel pump from a
> > 72 SPICA Alfa, and I want to use it on my 75 Alfetta
> > to replace the dead three-port pump.
> >
> > The third port on the Alfetta pump is a pressure
> > release valve.
> <snip>
> >
> > Thanks!
> > Ian
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