Hi my A6 C7 2012 s line (engine CGLC) DPF has had a slight crack and I had it welded and It seemed to be fine for like 2 days and now the smoke seems to come out of the ring. I have attached a video so you can see it. I do not have a problem with power, MPG, speed, idle no lights on the dash car works fine but slight smoke comes out that's the only problem. did an emissions test and that was fine too. could this be a bigger problem? Do you think the ring needs some sort of seal on it as when it was welded it was not put back together properly? or needs to be welded again? The ring am talking about is what am touching and when I poke it, it does more back and my finger slightly can slide through.
Thanks
WhatsApp Video 2022-06-23 at 7.00.42 PM.mp4