A friend has a 1970's L185DT Kubota with 850 hours that they use now and then around the house. It always ran fine. A couple of weeks ago it quit and wouldn't start. After a lot of checking, it turned out there was some water in the fuel tank. Today we drained all the fuel right to the bottom of the tank, changed the fuel filter, bled the system, and we have new diesel fuel right up to the injectors. Charged the battery so it cranks fine, but still it won't fire, or even sputter. Anybody know any magic?