Sounds like its plugged to me and by the looks of the pics i seen it probably would do good to go through that engine and clean or rebuild your getting blow by which is usually caused by plugged ventilation
What kind of smoke color smell sight and sputtering could be part of smock or a sensor and wheel bearings did you put the proper preload on them its 175 ft pounds on the axle nut maybe buy another jeep use this one for parts or keep workin out the kinks