On an Imperial, - if you want to run an external fuel pump, - you will have
to remove the original in-tank pump. It is too difficult to suck fuel
through it, and the engine will not run if you try to do things that way.
It is not a big deal to replace the in-tank pump with a similiar pressure
(later-model) unit. The hanger & stuff can be modified to accept most any
in-tank pump since the great majority of them are made in a similiar manner
and are available in a variety of pressure & delivery ratings, - so there is
really no reason to have to go with an external pump at all. I hav used
internal pumps with everything from just plain carburetors, - to throttle
body injection conversions, - to multi-port "Magnum" changeovers. All
worked out fine.
Regards,
DaveG.
----- Original Message -----
From: "Rob P" <fristpenny@xxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Thursday, August 19, 2004 9:36 AM
Subject: Re: IML: External fuel pump, (was EFI starting problems)
> Mike,
>
> I bought the car with that pump on it. Considering the troubles I have
with
> the car I would NOT recommend it to anybody. There are many advantages to
> having an in-tank pump. That's why almost all the new cars have the pump
> mounted in the tank. The fuel cools and lubricates the pump, the fuel
> dampens the buzz from the pump, and you don't have to worry about fuel
> starvation since the pickup is immersed in the tank.
>
> >From what I can tell on an 80's Imperial the fuel outlet is on the top of
> the tank. This means that if you put an external pump it will have to
pull
> the fuel up the tube. Most of the time people put an external pump in to
> avoid having to drop the tank, btu you'd probably be better off changing
the
> tank to a bottom outlet. Also if you don't drop the tank you're not going
> to remove the old pump. This means your new pump is pulling the gas
through
> the old faulty, maybe damaged pump and the 20+ year old sock filter. I
> believe these items are the main contributors to my problem. IF you're
> going to change the tank you might as well just replace the in-tank.
>
> Rob
>
> Nobody knows a source for the check valves?
>
> >From: "michael popp" <popp@xxxxxxxxxxxxxx>
> >Reply-To: mailing-list@xxxxxxxxxxxxxxxx
> >To: <mailing-list@xxxxxxxxxxxxxxxx>
> >Subject: Re: IML: EFI starting problems (was-still is : Fuel line check
> >valve)
> >Date: Wed, 18 Aug 2004 23:31:13 -0500
> >
> >Rob---Do you have a part # for your 13# external fuel
pump?---Thanks---Mike
> >Popp
>
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