Just wondering if anyone has any suggestions on why my truck is blowing a white smoke? I bought the truck at an auction and drove it home with no problems what so ever..Bought a afe stage 2 and magnaflow turbo back exhaust with cat delete and a egr delete block off kit and installed all. as soon as I started up truck after the work was done it started blowing white smoke. also looks like oil might be in exhaust system. I phoned a diesel tech place here and the said head gasket right away or possible egr cooler, called ford and they said it could be an injector, head gasket, fuel quality/water seperator, hpop. so i am a litte confused. seems a common thing with 6.0L. Is there ways to eliminate certain causes so I dont have to go to dealership and they keep replacing things till they get it right. If I can I will fix it myself.. Thanks for any info.