Last weekend I bought an 05 plate Fusion 2 1.4 tdci 39000 miles. I took the car on drive and all seemed fine. The car was a trade in and came with no warranty. In the last few days it has developed a problem where it seems to hesitate when accelerating around the 2000rpm mark with a small amount of throttle. It seems to judder/chug ever so slightly like a loss in power and then a split second later it will accelerate fine. The car starts fine and ticks over fine with no smoke or smells. I'm not sure if the fuel filter was changed at the last service, could this be problem? Any ideas?