Bob, I assume since you could see there ws no fuel in the filter that it is
one of those glass in-line ones? The fact that it is empty does not rule it
out as the cause of your problem. I've had this same symptom and cleaning
out the previously empty fuel filter fixed it.
If you do go with the electric, which it seems you are, I would suggest a
fuel filter in front of it - Those little Facet pumps do not seem to like
impurities in the gas. HTH.
Bob.
----- Original Message -----
From: "Bob Danielson" <75TR6@tr6.danielsonfamily.org>
To: <triumphs@autox.team.net>
Sent: Tuesday, June 06, 2006 1:01 PM
Subject: [TR] Failing Fuel Pump??
> My car has developed a "miss" and it seems to be tied to fuel delivery.
> Here's what I've noticed:
>
> - After a short drive the fuel filter is empty. Doesn't the pump draw/pull
> gas through the filter and then push it to the carbs?
> - Let the car sit for an hour or two and the fuel filter goes to 3/4 full
> - The "miss" seems to coincide with the filter being empty
> - The pressure gauge, at idle, reads 2.0 when the filter is full and 1.5
> as
> it empties
> - While driving the car, the gauge reads between 1.5 & 2.0. I took
> Randall's
> suggestion and ran the gauge into the car so I could monitor it while
> driving.
> - Haynes manual says 1.5 - 2.0 is the spec.
> - is there anything on the carb side that could be causing this? A stuck
> float valve or something. Doesn't the needle valve in the float chamber
> open
> and close to allow gas in or not?
>
> If you all think the pump is bad or going bad, I'll probably go to an
> electric pump so here's the next batch of questions:
>
> - Should I rebuild all the mechanical pump gaskets even if I add an
> electric
> pump?
> - I believe the electric pump gets mounted back toward the fuel tank and
> the
> mechanical pump can remain in place and connected to the fuel line.
> Correct?
> - I assume that a fuel filter should get installed before the electric
> pump.
> Correct?
> - Moss sells an electric pump for $99 and the local auto parts store has a
> Mr. Gasket pump for $40. Is there really a $50 difference in quality?
>
> Thanks for any help.
>
> Bob Danielson
> 1975 TR6
> http://tr6.danielsonfamily.org
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