B7500 start problem

[LawEd]

B7500HST, D1005 E engine, 2004 model, 585 hours, have had since new, always ran perfect summer or winter. I ran the tractor very low on fuel (but not out) helping to put out a neighborhood grass fire using the front bucket. Tractor was not used for about a week, got new fuel from a new service station. Tractor started as usual, drove the tractor about 400 feet into the field, engine started to run very rough and stopped running. I assumed I got bad fuel so I drained the tank, replaced the fuel, changed out fuel filter, replaced fuel hose from filter to fuel lift pump and from lift pump to injection pump, replaced engine air filter and for the first time bled the system. Tractor was difficult to start, eventually started, drove the 400 feet back to the yard, engine started to run very rough and stopped running. I have since changed out the plastic water separator/fuel filter assembly to a better system and the lift pump. Cranking almost starts the engine but not quite running. Lots of fuel flow from the tank thru the separator, filter and lift pump. Removing fuel tank cover while cranking doesn't make any difference. Am I terrible at bleeding the system or is there something else I have neglected to do?

 

[Russell King]

I’m voting for you need to bleed it again since that is cheap!

 

[North Idaho Wolfman]

I'll second bleed it again and longer.