Started about 2 weeks ago with the odd hiccup when i put my foot down got worse over the last week so went and fitted new plugs on Sunday and ordered new leads and both coil packs. I went to pick them up today and the leads were the right ones but the coil packs were wrong so hopefully they will be in tomorrow. However with the new plugs and leads the misfire is even worse, checked the spark plug gap and all the connections and they're all fine so im hoping that its the coils failing other than that what else could it be?