The first few time the car stopped, I reached back and opened the fuel cap.
I could not hear any "whooshing".
I have a ceramic-coated 4-2-1 header from Spitbits with no thermal
separation near the carb with a new Pertronix electronic ignition module and
coil.
I'll try the cheapest fix (new fuel filters) and work my way upwards in
price. I suspect that there is blockage in the fuel system to the point that
when I'm below a third of a tank, there isn't enough "head" to get the fuel
all the way to the pump. I neglected to mention that this started a couple
of years ago after the car just sat for a 5 month rebuild of the front
suspension. I suspect now that the gas tank got rusty from the non-use of
the car, and has been getting more and rustier since then.
The next step would be to coat the tank with the kit from Eastwood. After
that, a new tank from Spitbits.
Thanks, all. Have a great British Car Week!
-----Original Message-----
From: spitfires-owner@autox.team.net [mailto:spitfires-owner@autox.team.net]
On Behalf Of Greg Rowe
Sent: Sunday, May 28, 2006 9:44 PM
To: spitfires@autox.team.net
Subject: Re: Starving for Fuel?
The gas tank vent that runs to the charcoal canisters might be blocked. If
so, as the
fuel is pumped out, it creates a partial vacuum in the tank which the fuel
pump is eventually
unable to overcome. This is easily tested by opening your gas cap when the
car dies.
If you have a WHOOSH! of inrushing air, that's your problem.
Best!
Greg
>From: Marv Coulthard <coulthard@saltspring.com>
>Reply-To: Marv Coulthard <coulthard@saltspring.com>
>To: <spitfires@autox.team.net>
>Subject: Re: Starving for Fuel?
>Date: Sun, 28 May 2006 10:21:00 -0700
>
>Change out the fuel filter. Had exactly the same problem with mine.
>
>Is there a thermal isolation plate between the carb and the exhaust system.
>
>cheers
>Marv
>
>
>
>At 09:46 AM 28/05/06, you wrote:
>>Dear Listers:
>>
>>
>>
>>I have an intermittent problem with my 1980 Spitfire. Here are the facts:
>>
>>
>>
>>Once in a while, while running around 50-55 going to or from downtown, my
>>car would start to pulse and buck as if she were running out of fuel. Top
>>speed would get lower and lower to the point that she would just shut
>>down.
>>If I wait just a few seconds, she starts right up, but a half mile down
>>the
>>road, it occurs again. If I wait 5 minutes, she will start up and get me
>>home with no more problems.
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