Basil, if you can give us a few more clues, we might be able to help. First off, it isn't likely to be the fuel distributor itself, much more likely to be one of the known suspects up or down the line...
When you say stalls while driving, do you mean driving under power or slowing to a stop?
Does the jerking only happen before stalling or is it something that's happening all the time?
Do you know when the fuel filter was last changed?
Have you recently used any kind of injector cleaner in your petrol?
Have you checked the plugs to confirm they are wet?
While you're checking the plugs, just confirm that they are all in a straight line and this is a 103 motor we're talking about.
