ok this is strange 95 diesel when i run the truck in rear tank truck has lots of power and when i switch it to front tank you can notice a diffrance any idea what can it be ?????

 

restricted fuel line? tank switch on the way to went out?
just my 2 cents.....

 

What can I do

 

How much fuel in the plugged tank?

 

now full tank i be empty in a 3 days

 

i thote maybe it was bad fuel so last time i run it dry and towards the end end truck run funny was missing like it was empty but really wasnt

 

When you get it to about empty get a air compressor with a finger tip nozzel and blow it backwards into the tank. If you want to really clean it then you can drop the tank and do the harpoon mod on it.
http://www.billpounds.com/truck/fuel...nkHarpoon.html
https://www.ford-trucks.com/forums/7...-tank-mod.html

For other use here is another link you may like.
1996 Bronco/F-Series Workshop Manual
Downloads - 1994-1997 Power Stroke FAQ
dieselmann's Page

 

Read this post too.
https://www.ford-trucks.com/forums/8...no-miss-3.html

 

you guys i think my fuel cap could be bad ???today i fill up drove it about about 30 miles each tank i want it to add lukas in to the tanks so i get home i open the rear tank cap and i hear the air for 1 second going ssssss when i open the front one nothing you guys think my front cap may be bad ?????

 

I would switch the fuel caps; if your problem reverses itself (under powered rear tank), just get a new cap. Hopefully, this is the solution, otherwise follw the previous advice.

 

How I take the fuel cap off I don't want to cut that string

 

Work on it you can get it off, it takes a little twisting and prying.