Jeff, did you check the fuel filter? If it's like the TR3 pump, there is
also a sediment bowl and possibly still a screen between it and the pumping
mechanism, this can also get clogged. I know, those are the obvious, but
sometimes we forget the obvious.
Bob
----- Original Message -----
Subject: Vapor Lock?
> Hi all,
>
> I just picked up a 'new' 73 TR6 and had a weird experience in her the
other
> day. While cruising up the highway at @95mph the engine began to sull.
Almost
> like it was starving for fuel. My first thought was that the 1/4 tank
reading
> on the gauge was inaccurate and I was running outta gas. As I got off the
> highway it idled ok. Then as I proceeded through a neigborhood it began
doing
> it again until it eventually died. It would idle but any attempt to give
her
> gas and she would die. I got out and checked the tank...there was plenty
of
> fuel. I popped the hood and noticed the fuel lines just before the carbs
(ZS)
> appeared dry. My mechanical fuel pump has a primer pump so I pumped it a
few
> times and saw fuel move through the lines. I got back in and fired her up
and
> she ran fan (though I was cautious) the rest of the way home.
>
> My first thought was the fuel pump but I'm not sure why it would start
working
> again (unless by priming it I performed CPR). My other thought was that I
> might have gotten a vapor lock from the heat of the manifold to the bowls
of
> the carbs. We used to get this with some Weber carbs on Hondas we raced.
Are
> TR's known for this?
>
> The fuel tank appears to be from an earlier model and has no rust. There
are
> two vapor tubes at the top of the tank. One is plugged with a rubber cap
and
> the other has a hose draining out under the car. Is one tube open enough
to
> prevent a vacuum?
>
> Anyone have any ideas?
>
> Thanks in advance!
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