I have been using my ford 3000 tractor for 10 years now. I haven't used it in 3 months and went to crank and won't crank. It is upper 70s today. I am getting white smoke while trying to crank. I noticed the diesel fuel line closest to the front is not getting diesel. the other two are getting diesel fine. I changed the two fuel filters and they were terrible clogged. I am sure their is pluggage going to that line in the inline simms fuel system. I did the hand pump and cleared the air all the way to the injectors on the two good lines. seems like it should still crank on two cylinders. how do I clean the inside of the simms fuel pump. the little manual hand pump works fine. I tried blowing air at the inlet of the simms pump and that didn't help. I unscrewed a bolt on bottom of simms and rusty water poured out. I don't even know what that was for. any advice on what to do would be greatly appreciated.