2006 Audi A3 2.0 T

unusual codes for my 06 audi, random misfires and i have changed spark plugs and coil pack

Hello, Scotty, I have your videos very useful so thank you very much!

I bought this Audi with a check engine light on because when I ran the codes and found the it had a random misfire and cyl2 misfire detected. I looked up what it could be and everything I read pointed to spark plugs an coil packs. So after purchasing the car and having changed the oil, oil filter, fuel filter, and air filter I also replaced the spark plugs and coil packs (I did not check for gap on the new spark plugs didnt think it was important) , and when I was driving it the other day the Check engine light came on again, and now it was random misfire and cyl 4 misfire. I dont know what it could be after having put in new plugs and coil packs. Please help

NEVER buy a 12 year old used audi, they are money pits, requiring audi dealer computer to fix them half the time. But you could have tons of things doing that from intake manifold leaks, head gasket leaks, wiring problems, injector problems and more. Try swapping injectors to see if miss moves if you change #4 injector with another, do that first and pray

oh wow ! yea it has a weird noise coming from the back during start up. could it be fuel pump?