[Healeys] Drain tubes

[Michael Salter]

Hi Stephen,
If the carb float needle valves are not sealing completely when you turn
off, the pressure in the fuel line created by the fuel pump spring can send
a full pump charge trickling into one or both carbs. This is usually of
sufficient volume to overfill the float chamber and the fuel runs out of
the carb jet and eventually finds its way into the manifold and runs out
the manifold drain tube(s).
The vitron needle valves that used to be available really stopped that
problem but I'm not sure if they are still available.

M

On Sat., Jun. 6, 2020, 6:31 p.m. Stephen Hutchings, <s.hutchings at rogers.com>
wrote:

> I've owned my car for many years, but it seems that lately I’m getting
> more fuel dripping from the drain tubes after a run.
> It seems to drip for a long time before slowing down and stopping. Now,
> I’m not talking about big puddles of fuel, but I started to poke around
> because I could smell it and there is a small puddle in the pan under the
> car. Nothing leaking from the carbs at all.
> Anyone else noticed this?
>
> Stephen BJ8
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