I am new to this forum and new to the 6.0 PSD family. I have a 2005 with a 158,000 miles. It feels like it is missing and white smoke puffs out after the shifts only when it is cold. Once warm the truck runs good but still feels like it has a slight miss. I deleted the EGR system and changed the fuel filters and the oil. I think it is injector related but too new to diesels to be sure. Any help would be greatly appreciated.