Help! Loss of power without coolant loss, runs rough.

[maladosteo]

Just got back from vacation down to Wilmington towing the 5th wheel (@12k). Dropped it off at storage and started to drive home and had some loss of power. The farther I went, the more power I lost and the rougher it ran. I pulled over at a gas station and checked it out. I had no blown IC boots, no puking from the Degas bottle, the coolant was at the recommended sticker level. I limped it to the nearest Autozone and had them check it out with their little scan tool and it showed no codes...
I "think" i may have a bad injector, but I have no way of knowing. I don't think their scan tool had the capability to see what's really going on...
Any help or guidance would be greatly appreciated!!!

[rjm0027]

same type of thing happened to me, mine is blowing white smoke though in addition, still at the garage waiting on them to figure out what the heck it is, they ran an injector buzz test and it was normal, checked the fuel, it was good. I have no idea what it is, also have no codes