Car misfiring in wet weather

My car is misfiring in rain. Changed plugs, core plugs, leads, coil pack. It started raining again and the car is missing again.

Asked on 13 June 2012 by tania

Answered by Alan Ross
You need to check the washer jets (sealing) as there is a known fault on Fiestas in that the jets leak and allow water to run down into the plug holes, resulting in a missfire.
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