Question for everyone who knows anything about the 7.3 powerstroke, had a guy change the glow plugs, injector sleeves, o-rings, fixed some vacuum lines and, replaced high pressure oil lines. that's what originally started this adventure.... Truck run great before the work was done.. guy finished it today so I go over there for first start up, 1. was a pain in the ass to get started , 2 it smoked like hell after starting. Idled awesome nice and smooth. Backed it out of the garage let it run the whole time, left the guys house drove 2.5 miles let it sit and run while I waited for my wife to get done with work. Walking out of the building every couple minutes to make sure it wasn't over heating, it run great for over 40 minutes. Never once got hot didn't even fluctuate in idle. Go to leave and put it in reverse starts running a little rough. Back out of the parking spot put in neutral it almost died and started running rough. SES light is on. Headed back to where the guy was. It was smoking once I got it moving, black smoke. Hooked the scan tool up truck dies soon as he starts the scan. Tried starting it after wouldn't start. Took scan tool off turned the key started right up idled for a few seconds and started running rough again. Shut it down tuned key on scanned it, no codes found. Unhooked it again and same thing runs great the gets rough. Rev it and it smokes black and is lacking power badly. Turbo is good. Did not have any problems before work was done, guys a heavy machine mechanic and works on big cat diesels and mining equipment. Know a lot more than I do and even he's stumped. What the fuck is making my truck run like this? Keep in mind I'm new to this diesel truck thing. Any suggestions what would make that 7.3 do that?