Okay, I knew I was going to have to cut grass today, so I went out and made sure my L235 started okay. I went out and it started on the first try. I went and picked up my trailer this morning, the tractor again started fine and I loaded it on the trailer. I then hauled it to my rental property, to cut grass. While enroute, I stopped at the gas station and topped off the fuel tank. Once at my rental property, I attempted to start the tractor. It is currently in the 90's here and I heated the glow plugs for about 15 seconds. The tractor acted as if it was going to start and then died. I again heated the glow plugs, pulled the compression relief knob and attempted to start it again. It again acted as if it was going to start, then died and gave out a white cloud of smoke. From this point on, the tractor just turns over and doesn't even act like it is going to start. It is turning over fine/free. I just saw that you should not try ether, to start it. I did some research and found that it may be the glow plugs. However, I do not want to go spend money on them, if I don't need to. The question I have is, do glow plugs go out that quickly? Started fine last night, started fine a hour prior to not starting and now nothing. Any help or leads would be greatly appreciated! I am not very familiar with diesel engines and or this Kubota tractor. I purchased it about 4 months ago and this is the first issue I have had. Thanks up front for any in put!