I could be missing something here in which I apologize in advance...
But on my TR6 the fuel _delivery_ line is at the bottom of the tank. The
fuel _return_ line is on the top (or near the top) of the tank.
So the system has some semblance of a gravity feed and the valves in the
fuel pump control the flow to the carbs.
I suspect either a fuel pump or a blocked line (in which case the
additional pressure of the high fuel level compensates for the
restricted flow the pump provides).
Peter Zaborski
76 TR6 (CF58310 UO)
Calgary AB Canada
> -----Original Message-----
> From: Joe Curry [SMTP:spitlist@gte.net]
> Sent: Tuesday, February 03, 1998 1:51 PM
> To: Georgas, Bill
> Cc: Triumphs Mail List
> Subject: Re: TR6 Fuel Delivery Problems
>
> Bill,
> Since your fuel is suctioned from the top of the tank, it may be that
> the tube that goes into the tank has developed a hole somewhere up
> from
> the bottom. If so, once the fuel reached that point, you would get
> symptoms of running out of fuel.
>
> Also, I point out that clear in-line filters don't always fill up.
> THe
> one on my Spit does not.
>
> Also, check the fuel pump itself. When the tank is full, it takes
> less
> suction to pump the fuel, than when it gets lower in the tank. Like
> water, fuel seeks its own level. If the pump is weak, it might show
> the
> same symptom.
>
> Hope this help[s,
> Joe Curry
>
> Georgas, Bill wrote:
> >
> > First, Thanks to all how responded on my recent coil/ignition
> problem. On to
> > my next TR challenge. My '72 TR6 is experiencing significant fuel
> delivery
> > problems.
> >
> > Facts:
> >
> > - Low (less than 1/4) fuel in the Tank
> >
> > - Car is warm, no choke used.
> >
> > - Car runs well great with full tank.
> >
> > - I get lousy mileage (10-12 MPG).
> >
> > Symptoms:
> >
> > - Inline Glass Fuel filter is empty/near empty. You can actually
> view air
> > bubbles being pulled into the filter.
> >
> > - Car sputters and dies (well, it's not getting _any_ gas...).
> >
> > My first thoughts are to:
> >
> > - Make sure I don't have any obvious air leaks that would cause the
> problems.
> >
> > - Then, check the fuel pump diaphragm is intact.
> >
> > Any thoughts or tips? Thanks in advance,
> >
> >
> > Bill
> > 972/273-1714- Voice/Fax
> > bill.georgas@mci.com
>
> --
> "Thanks to the Interstate Highway System, it is now possible
> to travel across the country coast to coast without seeing
> anything." -- Charles Kuralt
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