2002 will not pull fuel from the tank !!

[cvli6]

Ok guys here is one for you. My truck loss power and died on me and it would not restart. First thing i checked was the fuel bowl and it was empty. It had a little over 1/4 tank of fuel so i put 5 more gallons(brought it up to 1/2 tank) and replaced the fuel filter and turned the key on 5 or 6 times and still no fuel in bowl. The fuel pump runs so i removed the line going to the fuel bowl from the pump and turned on the key and no fuel coming out of pump. Bought a new pump and tryed again with no luck, so today i removed the tank and blew out all the lines with compressed air and connected everthing back to the fuel pump and the pump still runs but does not pull any fuel from the tank. Thinking maybe something wrong with my pick up ???? Anyone have any ideas on what to check next ??
The hpop and the engine both are good on oil.
New injecters and valve covers gaskets(less than a year old)

[Turbostang500]

take a look at this Welcome to guzzle's In-tank Hutch Mod Web Page


and this might not be it but a good thing to know
Help -Why is my F550 6.0 fuel tank liner deteriorating? - Ford Truck Enthusiasts Forums

[kaya@bernhausen]

yea, seen this many times. more on models with tank located behind the rear axle.
we usually plumb a vacuum gauge between the pump and tank and measure vacuum. don't recall the specific number it's not supposed to exceed ATM. but it definitely shouldn't be much more than a couple inches. if it is, when you pull the pick up, you're gonna find flaky grey matter all over the screen