09 F-350 blows white smoke
First of all I am new to diesels and this is my first post so I'm trying not to sound like a newb to much. I'm getting ready to buy a 6.4 and I test drove a CCLB today and it has the edge chip with the dpf removed. I left town and got on the freeway drove for about 2 miles when the truck said it was going to regen. I drove for about another 3 miles and got off the exit as I came to a stop the truck was spitting white smoke out of the exhaust. I turned left and went to the on ramp and it was still pouring white smoke. Got going around 60 and it was still smoking just not as bad so I stopped and shut the truck off.
I have never messed with a tuner but I hit the menu button and found my way to the power settings and it was on dpf present so I changed it to dpf off and it re-downloaded the #4 tune to the ecm. After I did that there was no white smoke all the way back to the dealership
My question is did the regen cause the white smoke or could it be blown head gaskets?? the truck has 117,000 miles on it so I want to hear your experiences with the 6.4 and what you think it could be causing the white smoke.
After talking to the salesman he said that the batteries died and they replaced both batteries, I have no idea if that has anything to do with it but wanted to let you guys know about that.
I purchased an H&S tuner at the first of the year because I want to go dpf delete but wanted to hear your thoughts on this truck, thanks guys!!