2 weeks ago, my Kubota B8200 started normal, then died after a few seconds. It cranks normal, but does not even try to start. I have power getting to all three glow plugs. After several attempts to start, with no luck, I decieded to change the fuel filter. I also changed the low pressure hoses from the filter to the low pressure pump and from there to the high pressure pump. I bled out the lines and then tried to start again. Still cranks, but does not start. I have 5 - 6 psi coming from the low pressure pump after just a few revolutions of the engine. The air filter was very dirty, so I have removed while trying to start. Even with a battery charger on boost so it cranks a little faster, it still does not try to start. In the past, even on very cold days, 10 - 15 degrees, it would start ok after a long glow. I have only had this tractor a few months, but has never given me a indication of a problem developing.