My ranger is running real rough at low rpm's get the rpm's up it run's fine it never dies and it idles fine. But when you take of it is real jerky like its starving for fuel. New sprk plugs, air filter, fuel injector cleaner in still runs like crap. ran the codes and nothing 61 is the only one it shows. Pulled the fuel pump and the bottom of the tank was clean and the fuel filter looked clean also. i do need to check fuel pressure. I really dont know where to go from here? the machine has about 640 hrs and a battery and some bearings have been the only issue. we work it we dont baby it. 2006 700 xp 4x4.