ford f250 fuel problem

[crawforddave]

I have a f250 with dual tanks the problem is you can run on front tank for about 2 mile then it will quit switch to the back tank then it overloads the cylinders with gas causing black smoke and dies at intersections any ideas?

 

[Tbars4]

...It may be the "tank switcher" unit...I forget the full name but it is not controlled by a switch...It is a plastic case that sits on the drivers side frame between the tank and the high pressure fuel pump, with a bunch of fuel lines running to it...they are a little over $100 bucks from the Dealer only, and they are a Dealer only part I believe...

...When my old one went out it actually pushed the fuel out of the gas cap on one of the tanks...I hope this helps you out..

...This ay also be a fuel pressure regulator or fuel pump problem also..

 

[RangerX]

It was a common failure part on the previous gen of F-series, what year is yours?

On my 1990, the rear tank will drain into the front tank. I researched the problem online, and found that there was a recall or something on the switch.