you could try taping a plastic carrier bag around the distributor
TIM
July 2005
What a bizarre problem! More detail is needed; does it do this as soon as it starts to rain, and how long does it last? Does it only happen when you drive along, how about if it's left idling in the rain?
Colonel Blinky
April 2005
I can answer this question...
why does my fiesta diesel lose powwr when it rains?