Your discussion thread jumped out at me. I have a Century 35 hp. diesel with the same symptoms. Changed filters, fuel pump and all fuel lines. Tractor would start ok but after it heated up for 30 min or so it would slowly loose power and die. I'd let it set in the field for an hour or two and it would start right up. Installed a clear fuel line on discharge side of pump to the injector pump and noticed small bubbles which would indicate a leak in the pump or suction line. Retightened all fittings and clamps . That was last spring and havent' noticed any loss of power so far this year but haven't actually loaded it up much, i.e bush hog. One of you said he noticed the problem after a bump occurred. Same for me. I hit a large rock without damage but a definite bump when the problem started. The elec. ground loosening might be worth pursueing. thanks,
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