I have a Ford 1710 with 900+ hours, Shibaura 3 cycle diesel. It has always been hard starting, but the last few years has been really hard to crank. Here recently, I have been completely unsuccessful. I have a brand new battery, and have tried multiple new starters thinking it is just not turning it over fast enough. New glow plugs and water separator, new oil, and filter. New water pump and thermostat. New muffler also. I have checked the injectors and they are getting fuel, glow plugs burning hot orange. I have yet to replace the injectors, because they are hard to find. I get black smoke, and the occasional backfire, but it never starts, even after the engine gets warm from trying to start. I live in Florida, and it is about 75-80 F, still no dice! Any troubleshooting advice, and comments are all welcome! Help me get this thing started, so I can fix my driveway!