Max Heim wrote:
> My MGB has been suffering from what seems to be fuel delivery problems, so I
> just attempted this test. I attached a length of spare hose to the exit of
> the fuel filter and ran it onto an open container (a measuring cup from the
> kitchen). It was only a US pint container, so I didn't expect to be able to
> run for a full minute.
>
> When switched on, it started off fast, filling about 2/3 cup in less than 15
> seconds. But then it stopped all by itself, so I switched off after 30
> seconds.
>
> If this is what it has been doing in operation, it would completely explain
> the symptoms. After driving at freeway or expressway speed for a few miles,
> the engine would sputter and lose power. After pulling over, I would hear
> the fuel pump kick back in, and after a minute, I could accelerate away
> smartly. In city traffic, it never had a problem, presumably because sitting
> at idle at traffic lights would give the pump a chance to catch up.
>
> This is a replacement SU pump from Moss that I only installed in late 2006.
> Its predecessor failed in a similar manner, but only after at least 25 and
> possibly 40 years.
If you switch off and back on, does it start working again?
-The Roxter
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