I'm sorry I know that there are a ton of problems similar to mine and I have read all of them and I just don't know where to start.
Here goes, ok my 2004 ford f250 6.0 is driving me crazy, it has been in the shop for approx. 3 month this all started about a year and a half ago with 120k on the truck either the head gasket went or the egr was clogged, so I went in and bought the total solution package: head gaskets, studs, EGR delete, new oil cooler, screen, coolant filter system, the only thing I didn't do was resurface the heads, my mistake I listened to a mechanic because I was not to familiar with diesel motors he told me to put a straight edge on the two heads and checked to see if they was warped so I did and they seem really straight and flat so I put it back together. Well needless to say in about 4 months I was doing it again because the head gasket blew again. this time taking no chances I took the heads to a shop and they had hair line cracks coming from the valves so I bought new heads and since they were brand new I figured that it wouldn't hurt to have them ported and polished
and I had the injectors tested and 3 were founded to be bad so I replaced them. and since I did that, I figured a new banks intercooler set up would be nice, new 5 inch exhaust, a five star torque converter, I upgraded the turbo, Airaide air filter system, and a tuner with gauges to monitor everything, I put it all back together and it runs really good this time. Then it started to miss so I didn't have time to do the work myself so I took it into ford the scanned the truck and said a couple injector were bad so they replaced them, again running great, then it started to miss and smoke so back to ford again a couple injectors are bad so they replace them, then I was on a little trip and it just died it would crank but not start so I had it towed home and found my ficm was bad so I sent it to someone and while it was there I had them do the 58 volt upgrade and when I got this back it was running great again, then it started to blow black smoke all the time so back to ford they said all the injector are over fueling and they said I had a short in the wiring harness for the motor causing everything to be messed up. so they replaced that and then when that didn't fix the problem they said it was only part of the problem and all 8 injectors need to be replaced. so now scared I decided to take it so someone else ford had about 5k of my money and I have put 8k in it myself with out my labor so money is getting to be a issue
well the shop I took it to said that the injectors had to be replaced so another 4k oh and while ford had the truck and this shop they both put in a new ficm to see if that was the problem and it ran the same as with mine so we crossed that off the list?? so the truck runs good for a little it and then winter and I was having a cold start problem the truck would start but would blow greyish black smoke and a could not go without it stalling until it warmed up, after it was warm no problem no smoke tons of power but as soon as I let it sit for 30 minutes or more I would have to start all over with the smoke and stalling until warm. so back to the place that replaced the injectors because it had less than a thousand miles on it and the codes were saying the injectors were bad again, oh and I thought that the cold start was do to the ficm because that's what I gathered from reading here so I replaced the ficm with a new stock one course that didn't help so it has been at the shop since March and they are completely stumped they put in a new set of injector and the show bad immediately please help