94 diesel runs out of gas can!!!!!!!!!!!!!!

[doug holt]

hello, guys i recently joined i have a 94 f350 dit it started to empty fuel bowl
so i replaced all the hoses on top of motor fuel pump still kemp emptying fuel bowl so i took a five gallon can filled it up with diesel and hooked two hoses up infront of tank swith on frame it ran like brand new truck so then i took the fuel lines from the swith backfront and rear tanks out the i found both screenson the end of sending unit in a million pieces then cleaned out the tanks then i blew out the lines wich i thought was good enough also put new screens on sending units then i thought it was ready to go WELL i was totally wrong i took it for a test drive it ran great on the rear tank fuel filter light barely came on never died on rear tank switch it to front tank runs bowl dry could it be the lines and the swith still have trash in them please help thank you

[Patrick Feeley]

You may have trash in the valve or the valve may just be bad. I would probably look there. Cheers!