[Diy_efi] Need Help With Holley Pro-Jection

[Shannen Durphey]

My experience with Jeep CJ style + TBI + frame mounted pump showed that
early Jeeps really should have some type of baffle installed around the
suction line in the tank.  

The pump of the frame is typically not intended to suck fuel out of the
tank.  Instructions which say the EFI fuel filter should be installed
between the tank and pump are just going to cause problems in the not so
distant future as they make a tough job impossible for the pump.  If a
person feels they absolutely have to install a filter between the tank
and pump, they should use an old carbureted type filter.

Seems as though diagnosing no fuel to the TB should be a fairly
straightforward process.  Providing you have fuel in the tank, you can
work back from the engine to the tank to determine where the problem
occurs.  At the very least, the pump should be able to draw fuel from an
open can to pump it immediately back into that same can.

Shannen

Samuel Gerardi wrote:
> 
> But would it work at all if the voltage polarity was reversed?
> 
> Let me also add that the instructions state to mount the pump no higher than
> the lowest point of the gas tank.  That's impossible for me.  I have an
> aftermarket tank that the bottom comes near the bottom of my springs, so
> after speaking to some other Jeepers, they suggested that it should work
> o.k. if I mount it on the frame rail.  Thanks.
> 
> Sam
> 
> >From: "Keith Kiberd" <kman460 at sympatico.ca>
> >Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
> >To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
> >Subject: Re: [Diy_efi] Need Help With Holley Pro-Jection
> >Date: Tue, 8 Apr 2003 23:13:45 -0400
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> >
> >The first thing that comes to mind is the voltage polarity to the pump is
> >reversed.
> >Just an idea.
> >
> >----- Original Message -----
> >From: "Samuel Gerardi" <samger2 at hotmail.com>
> >To: <diy_efi at diy-efi.org>
> >Sent: Tuesday, April 08, 2003 10:55 PM
> >Subject: [Diy_efi] Need Help With Holley Pro-Jection
> >
> >
> > > Hello,
> > >
> > > I have purchased Holley Pro-Jection 502-20S for my 1978 Jeep CJ5, 304
> >V8.
> > > It's all hooked up but won't turn over.  The fuel pump can be heard
> >priming,
> > > but never seems to fully prime since no gas is getting to the front and
> > > spraying from the injectors.  Can you think of a reason it won't prime
> >the
> > > pump?  Thanks.
> > >
> > > Sam
> > >
> > >
> > >
> > >
> > >
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