Girlfriend has a 2015 VW Tiguan. 8th digit of vin is X. Engine light came on, took it to Oreilly’s and got a cylinder misfire on 2 & 4. I replaced the spark plugs and swapped the ignition coils to the opposite cylinders. Still the same error, same cylinders. Took it in to the garage that worked on my car’s brakes for a good price but really unsure about this quote. What do y’all think?
If Carbon build up is the issue, how would I resolve that? Just by driving it hard for a bit like fickle_finger?