"Adrian" wrote in message
...

On the subject of Moggies - anybody know why mine has a tendency
to 'run on' for a few seconds after the ignition has been switched
off? Somebody told me it was to do with the unleaded fuel - she's
originally a leaded engine that the Morris Minor Centre in Bristol
'unlead-ised' with the aid of a 'magic' thingy that fits in line with
the fuel - apparently they've been fitting them for 20 years..

You can often cure the problem by reducing the idle speed, reduce it as much
as you can , but stop short of it staling on you all the time.

Ford had a real problem with this with their Kent (escort etc) engines years
ago. They provided a retrospective modification kit which was an
electrically powered air solenoid valve that was plumbed into the intake
manifold - switching off the ignition removed power from the solenoid and
air flowed into the manifold, the mixture was weakened and it didn't run on.

Julian.