Ford F250 Engine stalling

Joined
Jan 2, 2012
Messages
8
Likes
0
Points
1
#1
Please fill out the following to ask a question.

MAKE: Ford
MODEL: F250
YEAR: 1996
MILES: 163000
ENGINE: 7.3L Superduty Vin F
DESCRIBE ISSUE
....

"NO codes are or have been set" Engine stalling after driving about 2-3 miles. Fuel Filter was changed to address stalling issue and would not start after filter change. I became involved at this point (never worked on one before) and decided to remove the filter to make sure it was installed correctly. The filter bowel was empty so I added fuel to the bowel and put the cap on. Engine did start then and ran for about an hour at idle and thru a couple loops around the parking lot. Looked good so got on the road for a 10 mile trip and engine died about every 2-3 miles. Putting fuel in the bowel would get it going again for another 2-3 miles. I suspect fuel pump of fuel line blockage but I cannot find a manual that covers this vehicle/engine setup. Can you guide me to what and how to check what needs to be done.

Thank You
 
Joined
Mar 1, 2002
Messages
3,401
Likes
43
Points
48
Location
Kentucky
#2
I'm not a diesel expert by any means, but I would suspect the "lift pump" is weak or failing intermittently.
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
8,470
Likes
134
Points
63
Location
St-Hyacinthe, Quebec, Canada
#4
Don't recall a lift pump on a 1996 vin "F". I do on a 94 vin "K" though.

Maybe they have a different name for the lift pump with that newer version "F" engine of that era with the cap cover for the filter, but I don't recall that. Just trying to help the OP locate that if he wants to. Alldata is NOT showing me a lift pump for the "F" engine.

There is however a piston actuated second stage to transfer pump for the heads to get 40-50psi to get to the rails. Could that be what you guy's are referring to for this guy's "F" engine? Here are some diagrams to help. Vin F and Vin K were both available in 94. The lift pump was not there for a 7.3l turbo in 96, unless alldata is wrong, and that wouldn't be the first time. Screenshot (130).png Screenshot (131).png
 
Last edited:
Joined
Jan 2, 2012
Messages
8
Likes
0
Points
1
#5
Thank you all for your help. The first diagram Nickb2 posted match's the engine and I have other sources that refer to the pump as a Transfer pump. Again, thank you for the help.

Mike