OK, so it has been a while since writing. I am still having trouble getting this lister 16-2 to fire on both cylinders equally. One cylinder has a great report and HOT exhaust temp. The cylinder closest to the shut-down lever or what I seem to think is number 1 is the lazy cylinder with an "empty" report, warm but not hot exhaust temp, and black goo running out of the exhaust pipe which I assume is UN-burned fuel? If I hold open the valves on cylinder #2 to asses #1, the engine slows down and labors to the point where it will almost stall. I have now pulled out the injector of the lazy cylinder and cleaned it to find that it is working perfectly with sharp clouds of fine mist when rolling over engine. I now have a bit warmer exhaust on the lazy cylinder but not much more power and the engine still labors when the healthy cylinder is shut down. It is such a contrast that the generator this engine is turning makes the lights flicker due to impulses from the healthy cylinder. I called on the diesel shop who supplied the engine and they assured me that the engine was rebuilt with new pistons, rings, and supplied with two rebuilt heads. I tend to think this is true as the heads are really clean and there is no perceivable blow-by or leak off of compression when rolling the engine over by hand. Why is there black goo filling the exhaust, and why is my engine not burning its fuel with a nice fine mist from the injector? What am I missing?