hey all, I'm pretty new to diesels. " other then a 7.3 some years a ago". I recently picked up a 2004 f350 6.0 with automatic trans at a crappy car lot and lets just say I'm feeling some sting in my ring now. they aint gonna give me my $$ back so I guess its time to make some lemonade. I drove it for a for about 45min on the test drive and it ran fine. drove it home, about hour and a half drive and it ran fine. went out after it had been sitting for about 4 or 5 hours and fired it up and i sounded kinda like it was surging for a min. i went to take off and it started to stumble/fall on its face and and I saw some white-ish/grey-ish smoke and turned around after about 200yards down the road, got back to the drive way and after about 5 min at idle it seemed fine. I took off down the road again and it ran fine. injector maybe? any suggestions?