Recently purchased Audi A4 2010 with 147000km, has a juddering when accelerating, smooth in all other respects, I cleaned the mass air flow sensor, checked the spark and coil packs, one coil pack is a different design from the others and I am having trouble removing the third spark plug.
Any assistance would be appreciated
Overgapped or worn plugs can misfire at high rpm.
Pro tip: if you have CEL codes, always put them in your OP so folks like us have a better clue what’s going on with your ride.
sorry its p0303, could it also be the coil, that was the oldest and broken