Bruce -
Is there are fuel filter in the line somewhere? If so,
when was the last time it was replaced? There may be
some rust & crud in the fuel lines which are clogging
up the float jet. The other problem may be that the
floats are worn and have some fuel in them?
Good Luck,
Alan
'53 BN1 '64 BJ8
--- Bruce Starke <bstarke@redshift.bc.ca> wrote:
> Hi everyone--I need your help with this very
> bothersome problem. I searched
> the archives with no success. The HIF4 carbs (#AUD
> 4450/4451) on my wife's
> 1976 MGB (twin carb conversion by the previous
> owner) persist in leaking from
> the vent/overflow tubes AT IDLE ONLY. On switching
> on the key, the pump clicks
> till the carbs are full and then stops--no leak.
> Once the car is started, fuel
> spills out of the vent tubes until the car is revved
> up when it stops leaking
> until the revs are back at idle. The leak is huge
> and not just a few drops. I
> have replaced the needle/seat and set the float
> height. Checked over the rest
> of the carb and can find nothing obviously
> amiss--even to the point of
> dissassembling the choke device and finding nothing
> wrong. There is no leak
> from around the choke, jet adjustment screw or fuel
> inlet. What am I missing?
> Thanks for any help you may be able to give
> Bruce Starke
> GOLDEN BC
> 1962 Austin Healey tricarb (at the painters now)
> 1963 Austin Healey BJ7 (driver)
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