ok 2006 audi a3 2.0 just had a tune up and my check engine light comes on po302 cylinder #2 misfire so replaced the spark plug fine for 150 miles then back on again same code just replaced all coils at the dealer and like clock work 150miles later light back on again..
has anyone had the same problem does anyone know the solution all ideas are a great help would love to hear your ideas

thank s