Make: Ford
Model: Fiesta
Engine: 1.6 Duratec
Year:
all
Engine miss at idle. Due to the design of the engine, water accumulates in the spark plug wells, as shown by the obvious water marks on the lead below. Clearly spark plug fittings on the leads are not designed to operate under such conditions and it's amazing that they last as long as they do - this one is at 15,000km and one year old!

Recommended Action:
Unfortunately, we do not know of a cure for this problem! Quite obviously, we cannot extend any warrentee on leads in this state.