Ricardo Ramos

Hi everyone My name is Ricardo, and I'm looking for help My A3 1.8T 2000 is misfiring on 4th cylinder so bad. I have change the spark plugs, ignition coil, swap the injector, and the problem still there on the 4th cylinder. the engine sputtering all the way even more with the acceleration, the data reader shows only mixture. any help is very welcome Thanks