I'm new to the forum so if I post something dumb please correct me. I have an 07 F350 with 212,000 miles on it. Started by stumbling and running rough then going completely dead. It started back up and ran for 10 miles with no issue. I changed the fuel filters on it because it sounded like it was starving for fuel. Ran fine for approx 200 miles. Same thing started happening again, stumbling, missing, shutting off. It will usually start back up right after it quits but won't run for long. Pulled the fuel pump and opened the cover to find a lot of crud in there. Cleaned everything out and reinstalled. Still wouldn't run over a few seconds. Bled all air out of system and still nothing. After checking some connections noticed the front plug on the FICM wasn't fully plugged in. Secured the plug and truck ran. Sat and idled over and hour and drove it 3 or 4 miles, ran perfect. Two days later got in truck and it started fine but after a few minutes it stumbled a little at idle. Made it a couple miles down the road and same problem was back. Limped back home. The truck will start back up after it dies but won't run for too long. I have made several searches on several forums but haven't found an issue quite like this. Usually it's a no start at all or no start when hot. Anybody ever run into this issue or have any insight? It's been down for a week now and I really need it running. Thanks in advance for the help.

 

You need to buy a scan tool. ForScan app for a smartphone and an ELM327 OBDII adapter will get you a powerful tool (pulling codes and reading engine parameters). It is a total cost of $45 or less.

If you don't want to go that route, then you should take it in.

 

You should do the fuel filter canister bubble test. You may have a leaking injector that is kicking combustion gas into the fuel rail. And you need to get a fuel pressure gauge so you know if there is a fuel delivery problem.

 

I have the Forscan app on my Ipad but I wasn't sure what all to set up on it and what the correct parameters were. It just seems odd that it would run for over an hour and then go right back to the same issue.

 

Start forscan. Run tests . the Button on left,follow derections. Then Go to the left side and open dashboard. Go to top hit settings and then + sign to add pids.
icp.psi
Icp volts
ipr duty cycle
Injector pulse width
Ficm sync
Ficm main power
Ficm logic power
Vehicle battery power
You can add more from the list like various temps to monitor you truck in future. I think you save in that screen. Not sure. But anyway hit your Dash board button again and pods will pop up. Then just hit the play sign up top to start live readings. Post back your dtc's and the live data.

 

So ran a scan on the truck. No DTCs present. I’m going to attempt to attach a screenshot of the PIDs as the truck was running. Not sure if I have the correct PIDs but these were all that were listed related to what I needed to monitor. It took quite a while for the truck to start tonight. I almost didn’t think it would. I have a video of it as well if that would help.

 

Well that's a start. What ya need to do now on Forscan is change your measurement setting to imperial. That way your pressure readings will show psi not kga.
Go to the main settings on left then measurement setting to imperial.
Another thing is the fuel pressure. Tomanytoys mentioned getting a gauge to monitor pressure. If you don't buy one at least have someone check it for you
That one is kinda important form what your saying so far.
injector pulse width is in the Forscan list. You just have to find it. Yah the list is long, in a way that's good.
Ipr duty cycle or % witch ever they have it listed at, would be good to.
I have to be in my truck to look at the settings, so not sure on that. That would help to.
Good luck.

 

I’ll try and find out how to set it to psi. So far I can’t seem to find the settings button. It would be nice if you could set everything up without having to be connected to the truck. I’m also going to be installing an air fitting this weekend to check for any leaks in the HPO system.

 

I'd do the fuel bubble test first ......... it doesn't cost anything.

 

Mark, Jack what about something in the tank blocking the foot?

 

If the foot is intact, it should have bottomed against most tanks (compared to two of mine) it would have to wrap around the foot to clog, or if not bottomed, cover the entire screen. It would need to be large, but your right it can happen. No one so far has asked about fuel level, if the side valve is broken.

I’m just putting at the front fuel bowl work since there are none of the typical codes. I’d first check if filling the canister shows any air bubbles for an air draw leak at the HFCM, and then if an injector is reverse flowing combustion gas. We’ve seen similar situations in the past where the truck starts and runs initially, until air fill the rail and stalling. It may not be the issue, but since the OP said it feels like it runs out of fuel, I’m tending to go there.

 

It's easy enough to do the bubble test and it's also free other than a little time.

 

I plan on trying this over the weekend. If I'm checking to see if it's drawing air from the pump somewhere what's the best way to do that? Just remove the cap and the filter and cycle the key on? Should there be any bubbles at the initial fill or do I wait and see if they appear after the pump cycles off?

 

Remove the cap and filter leave bowl 1/2~3/4 full. Use the solenoid wire to crank and watch in the bowl for bubbles.

 

I wonder why weren't you getting a fuel pulse width (same thing as injector pulse width) reading when cranking?