Re: 1365 misfire. Time for the scrap yard??
Ok, just one more update, for those who might follow my quest. The tractor ran pretty well, but not quite perfect, a single cylinder stutter on acceleration, then smoothed out. Also there was a coolant leak near all 4 of the fuel injectors. I emailed Danny Bowes at Import tractor parts, where I had gotten many of my parts, including the short block. He told me there were some "copper sleeves" around the injectors that sealed to the cylinder head with an "O" ring, and that I would need new "sleeves" or reseal mine. He was out of stock on the sleeves, so I ordered "O" rings. I removed the injectors to check this, there are no sleeves there at all, (I was pretty sure I would not have missed them in the first place). I did pressure test the cooling system to find that I had installed the studs that hold the injectors into the head without any sealant on them, I removed, applied permatex sealant, reinstalled, and pressure tested again, no leaks any more. While the injectors were out, I called my fellow teacher at the college, he runs our small, but good diesel program. He was able to test my injectors, we had the correct machine and adapters. He filmed all 4 in slow mo, and low and behold, three had great spray patterns, but one just dribbled out. I ordered a new nozzle for it, we disassembled the injector and cleaned it with an ultrasonic cleaner, but on reassembly, it was not much better. We installed the new nozzle in it and retested - man, looked just like the other three, it had 4 finely atomized sprays. So then we readjusted all 4 to have a pop off pressure of 3225 PSI. Last night I got to reinstall them, and oh boy, the tractor runs near perfect! So good in fact that after running an hour, I reinstalled the sheet metal so she looks like a tractor again. I have many small things to do, including getting the liquid out of the tires, repainting the rear wheels and installing new tires and tubes, but at least it feels like it is worth doing, and my grandpa's tractor will be back at my farm working again before the winter comes. I hope if anyone else has these kind of problems, this will help them sort them out. Good luck! I would have attached a video of it running, but it wont take a video.