Saqib Bhai, I think so far the pump has been moved countless times but could not be adjusted to the correct position. I believe that without having accurate parameters (the default position of pump, load screw and residual fuel screw) the problem will remain. As you have worked around CD20 engines, do you know the exact factory positions of above three elements. What I remember is that when I took delivery of this car, there was no smoke, no blow-by, avg of 17-18km/l, no missing and a very smooth ride. When I look back to trace the problems, I found that it all started with mis-alignment of pump, then re-adjustment of load screw and residual fuel screw. If these three elements are put back to their original position, all will be well. Now I know the problem but unfortunately don't know how to cure it nor do i find any one who can actually put these three things to the accurate positions. Helpless I am, I must say.