[Spits] Fuel pump installation

[Dave Simpson]

Nick

General lack of power, excessive gas  consumption.  To be sure I removed the
air cleaner and saw gas squirting out the secondary while at idle


David R Simpson




From: nmoseley at telus.net
To: dr_simpson at live.com
Subject: RE: [Spits] Fuel pump installation
Date: Mon, 16 Jul 2012 11:30:09 -0700





Thanks Dave. I pick up another new pump today, and will give it another
whirl.
What were the symptoms of the pressure being too high, so I know what to look
for?
Many thanks
Nick Moseley




From: Dave Simpson [mailto:dr_simpson at live.com]
Sent: Monday, July 16, 2012 5:41 AM
To: nmoseley at telus.net
Subject: RE: [Spits] Fuel pump installation


Nick

 I had the same issue with a 76, If you are unsure if the pump arm is over the
cam try roataing the motor.  This could give you more clearance.  I talked to
some mechanics and this is not uncommon it seems "hit & miss".  I think it has
to do with the  cam position.  I did not think these "new" stlye pumps are
exact replacements.  They also pump at a higher pressure I had to install a
fuel pressure regulator after replaceing the second mechanical pump and I have
a downdraft weber.

 good Luck

David R Simpson
76 Spitfire
Lafayette LA


> From: nmoseley at telus.net
> To: nass at yahoogroups.com; Spitfires at autox.team.net
> Date: Sun, 15 Jul 2012 16:29:23 -0700
> Subject: [Spits] Fuel pump installation
>
> Sorry for the cross-post.
>
> My question is how does one install the arm of a fuel pump in a later Spit?
>
> I have an 80 Spit in which I installed a new fuel pump. This is the pump
> designated for the later cars (78 and later), along with a spacer block,
> which was duly installed.
>
> Haynes manual says to be sure to place the arm such that it "lies on top of
> the camshaft eccentric and not underneath it". I took that to mean the arm
> has to be threaded into the hole in the block until it makes contact with
> the cam, and then the pump can be returned to it correct vertical position
> and installed against the block. (This means that the studs have to removed
> from the block in order to manipulate the pump this way to get the arm into
> that position).
>
> Put another way, this means the arm is running on the "outside" of the cam
> (so between the cam and the wall of the block), and no part of it runs
> underneath the cam.
>
> The arm of the new pump broke.
>
> Did I have it installed correctly but it was a bad part, or should I have
> acted counter to Haynes, and had the arm run on the "inside" of the cam?
>
> I've re-installed the old pump, which has a different style arm, and will
> order a new pump, but would like to be sure I am installing it the correct
> way before risking another $50 pump.
>
>
>
> Many thanks
>
>
>
> Nick Moseley
>
>
>
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