Hi so this all started on my 85 ford 250 with 6.9 diesel after i replaced my thermostat i umpluged the wires to the injector pump so the where out of the way did the thermostat and it would crank over but not fire up so i thought it was the IP cause i had fuel to the bleeder on the filter but no fuel to the injectors so i replaced the IP and made sure that the timing marks where lined up when installed the IP all back together and still same thing no fuel past the IP the day before i did the thermostat the truck started harder and ran a little rough for a bit