What's causing my Volkswagen Passat to misfire?

My 2003 Volkswagen Passat 2.0-litre petrol has started misfiring and running poorly. Can you tell me why this is?

Asked on 3 October 2013 by dazelum2468

Answered by Honest John
See the entry in car by car breakdown that gives the reasons for this: www.honestjohn.co.uk/carbycar/volkswagen/passat-20...d
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