hello all, ive been having many issues with my 2000 7.3 f350 over the past 6 months. ive replaced all eight injectors, valve cover gaskets, under cover harnesses, pigtails going to the harnesses, glow plugs, icp, ipr, checked to make sure the idm was functioning correctly, and i am still seeming to have issues. everytime i start to accelerate the service engine light comes on and as soon as i let off it goes away within 5 seconds. the truck also seems to be smoking a lot more than usual, more of a grayish color than black. and when cruising at a slower speed around 20, almost a pure white smoke. im out of ideas of what can be going wrong and i dont want to throw any more money into it without being definite on the cause. the 4 engine codes im getting are p1211, p1316, po603, and p1249. thanks for your help