My alternator/water pump belt broke. Tractor over heated. I got the belt on and now tractor won't start I got full tank of fuel, I cracked the fuel line at injector and got fuel. I have good battery cranks very well. When it cranks I get alot of white smoke and it sounds like it wants to start but it won't. The fuel shut off seems to be moving from end stop to end stop freely. The tractor ran fine when I pulled into the workshop to put the belt on but after belt was put on now it won't start. All your help is appreciated.