I've waited years to buy the truck of my dreams. I just purchased a new loaded 2013 FX4 with Ecoboost after hearing good things about the engine. I noticed at low RPMs I'd feel the truck shaking like it was wanting to stall out or puttering. I took it to the dealership and a couple of things made me suspicious. It was reported that the service manager drove my truck in addition to a tech and they left me no Service Work Order. They told me that the truck had an adaptive transmission and the tires may be hard from sitting on the lot and sent me on my way. They said to give it more time to break in.

I started to Google the problem and now I'm nervous wondering if I have a defective Ecoboost. Can anyone make a recommendations on what to try next? Does the problem get progressively worse? You spend this much on a truck you really don't want it feeling like its about to backfire.