Sumner :
Cracks in the pump body are a possibility, one of mine has an almost invisible
crack near the seat for the outlet pipe fitting (probably caused by the DCO
overtightening the fitting, which also still leaks <g>). I patched it with JB
Weld, but haven't put it to the test (yet).
I have found that 'reformulated' gasoline (with MTBE) will dissolve the rubber
(?) coating on the pump diaphragm fabric, leaving it looking perfectly sound,
but porous to gasoline. The "NOS" replacement diaphragm that has been on my
shelf for many years failed the same way within days of being installed, but
the one I got last year from TRF has been holding up well. Apparently there
was a change in materials at some point. (Note : the diaphragm is also the
gasket between the two halves of the pump body. This, and the cork above the
float bowl are the only gaskets that can leak gasoline. The gasket to the
engine block can only leak oil.)
Pep Boys (a local auto parts chain) seems to carry the "Facet" pump in both low
(3-4 psi) and high (7-9 psi) versions. It's cheaper from Whitney. I've used a
low pressure Facet (from Whitney) on a TR3, it seemed to work OK. I used a
filter on the outlet (the kind that also converts from pipe threads to hose
barb), the crud from the tank didn't seem to bother the pump. You can still
buy a standalone sediment bowl (with a steel bowl instead of glass), I think
they're used on GM diesels.
I don't understand how you can lift the flex line to the oil gauge off of the
hard line, still have pressure on the gauge, and not have a major oil leak.
Randall
59 TR3A daily driver
Sumner Weisman wrote:
>
> SWMBO is not happy. Since I last drove the TR yesterday, the garage reeks
> of gasoline. Checking this morning, I found that it's coming from the fuel
> pump. I tightened down the cover screws and the two mounting nuts (the rear
> nut sure is hard to get a wrench on) but the leak persists. With the engine
> running, I can watch fuel dripping onto the floor slowly, although I can't
> see where it's coming from. Do you think it's a crack in the wall of the
> pump body? Cracked gasket? Any other thoughts or comments from the BTDT
> guys?
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