Ok guys, here’s the story. I have a 2004 f150 5.4 4x4 with 307k miles, original motor and tranny (that’s awesome right there!). Anyway, hadn’t drove it in a bit due to having a company car and decided to go fishing. Hooked Jon boat up, went 2 miles up the road to the lake. Fished, came back home. Got a couple hundred yards from the driveway and truck died (it never does that, ever). Well I tried and tried to crank it, started spinning over but wouldn’t start up. Well I look down and it says 0 miles to empty. First time I’ve ever ran ANYTHING out of gas in my life other than a weed eater. (I know it’s a no-no to run it low/out so please spare me the lashing) Call ole lady and ask her to go to he store to get me some gas. I put 3-4 gallons in the tank, continue to try to crank it and it won’t start up. So I took the plastic off the top of the motor and poured gas down in the throttle body, it fired right up and I hurried up and got it home before it burnt that gas off and died. Took battery cables off and took a nap. Woke up, went to dinner, came home and put cables back on. Truck fired right up with ease, I revved it up a few times, drove it up the street and back. Told myself “truck is good” and shut it off. Dang thing hasn’t cranked since unless I pour gas directly in throttle body. I took the fuse panel off and pushed the little red reset I read about online and it didn’t click and didn’t change anything. I just replaced the fuel pump driver module a couple months before this happened so it’s fairly new. So I figured I prob burnt up the pump. It is 15 years old and over 300k on the original. Well I dropped the tank, and pulled the pump. I can hook leads off the battery to the pump and it’ll shoot gas out, and you can hear the motor running so it seems like it’s working.

I’m a decent parts changer but not a mechanic. I haven’t put the pump and tank back in yet due to not being sure what the issue is. Any ideas??

Oh, also being a 04 it has no Schroeder valve to check psi on rail. I do have an edge tuner so it can give me some info To report back. Believe the only code it was throwing was low fuel pressure though

No I did not, it has never been under water.

Fuel filter history - changed previous year, prob 6-8000 miles ago. When I pulled the filter out of the rail before dropping the tank there was fuel on both sides of the filter.