My car has been running abit crap lately to say the least. I have a 1.2 tsi fr on a 12 plate with 23500 miles on the clock. I used to be able to hit over 100 easy but now it seems such a struggle to even get to 100! Just took out the HT leads from the coil pack and the top left one which leads to cylinder number 2 was all blue inside with a lot of powder inside. All the others where fine clean as a whistle. What does this mean? Is this why my car is running crap?