My a4 2.0tdi smells really bad on idle of exhaust/emission.
I’m thinking maybe because I don’t do many miles in, but drive it quite hard when I drive it. I have tried cataclean but it didn’t do anything. Would it be worth removing egr valve and cleaning it?
I’m thinking maybe because I don’t do many miles in, but drive it quite hard when I drive it. I have tried cataclean but it didn’t do anything. Would it be worth removing egr valve and cleaning it?