Friend of mine has a mk5 1.6 twinport and out of no where mssfireing like no tomorow. I tested coil pack and it was faulty so replaced it with new plugs aswell. Guess what 10miles later the problem is back. Across the net I've found many cases of this with no fix people even as far as changing complete heads :0
Can anyone shed light on this? Thanks for any help.