Thanks guys,I will go for a set of good silicone leads,as the previous owner has never had a problem before.

Hi All, after not using disco for a few days,had a backfire on lpg so switched to petrol,and discovered a miss,most noticible in high gears.replaced coil ht lead,plugs,and checked plug leads, rotor arm and dizzy cap (visual).missfire still there,so replaced coil.missfire,if anything seems...