Thanks, guys. I'll pass this info on to the Ford mechanic.

Thanks for your info. The mechanic said that the inside of the fuel tank looked reasonably clean for 242k miles.

Hello all. New to this posting thing. Have a '03 f-250 w/7.3l. When fuel is 1/4 or approx. 80 miles left showing on overhead console trip odometer, engine rattles real bad. Dealer replaced fill tube and bell shaped strainer below fuel pump in tank. Didn't help. Beginning to think the computer...

Hey thanks for the info. Me and the dealer kinda thought that might be the problem. Only problem is, finding out where the air is coming from. 'spose to take it back to the dealer tomorrow, who really doesn't have a clue as to what to do.

Hello, new to this forum. On my '03 f-20 crew cab with 7.3l diesel, when the fuel tank is below 1/4 and the overhead console is showing approximately 65 miles to empty, the engines rattles real bad like it's sucking air. Local dealer replaced the fill tube and bell shaped strainer below the fuel...