When were the fuel filters last changed? Change interval by the book is 20k miles.
You might have a failing Horizontal Fuel Conditioning Module (HFCM). This is a fuel pump assembly located on the drivers side frame rail and approximately under the driver's door. It is mounted on the inside of the frame rail. The first of 2 fuel filters are in the HFCM assembly.
The HFCM does several things:
- It is a fuel pump and keeps the engine primed with fuel from the tank
- Contains the first fuel filter. The second fuel filter is on the engine.
- The HFCM contains a water separator to catch water contamination in the fuel. The water separator is the fuel system's last line of defense against water ingestion.
- The HFCM also has a Water in Fuel sensor to warn you if the water separator is swamped with water and needs to be drained ASAP.
I had this exact same problem with my 08 F350 6.4L. My symptoms were exactly the same and no codes were thrown. I recognized the symptoms and got it taken care of immediately. The HFCM really was failing and my CPO warranty covered the HFCM replacement, minus my $100 deductible. The HFCM is a $600 part from Ford, so I took full advantage of the CPO warranty. It would have been an $800 job without CPO warranty coverage ($600 HFCM + labor = $800).
You should get this taken care of ASAP because the engine is being starved of fuel and fuel is the ONLY source of lubrication for the high pressure common rail system.
The high pressure pump in the CR system won't last long without lubrication and can be VERY expensive to fix.
I've had ZERO problems with my truck since getting the HFCM replaced and that was about 5k miles ago. The truck currently has 83k miles on it, 68k miles were on it when I bought it last year.
Good luck and Welcome to PowerStroke.org.