03 F350 100k. Last week I was driving around and stopped at the inlaws while letting the truck idle is started. First rough idle so I started heading home. Took it up the highway and it didn't like the throttle at all started to buck but ran smooth on the flats. Got it home parked it and let it idle and it was rough. The next day I took a look at it and it had a P0278 P0306. So I cleared the codes and went to start it and it did. A little rough and then it go worse and worse until it stalled out and didn't want to stat back up. So I have checked the batteries and they are both good, checked the FICM that is 48.5V, pulled the EGR and it was clean, and checked for shorts on the wiring harness. Started it again the next day and it started then ran rough so I gave it a little throttle to keep it running and it did then I gave it all the throttle and I got a little black smoke and no respons at all. At full throttle it still just idled rough. Now it wont throw any more codes. Don't know what to do next any help would be good.
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