Who Else Has Trouble With Aux Tank?

[biggreen78]

from what i gather the problem is a bad switch in a lot of cases. i filled it up when i first got it and when i switch the selector switch, my gauge dropped to empty. i was told that sometimes the gauge does that so i decided to drive on it anyways, hoping that this would be an easy fix. well i was wrong. there was no fuel from the full gas tank getting to my engine. did the switch not relay the information, or could it be something else. (the tank has a slight leak, but on a long trip i figured at 10mpg it would go quick)

 

[77 F-250]

on my truck i have 2 switches, one under the dash for the guage and one on the floor between the seat nd door for the actual line switch but I aslo have a 77 it depends on what year your truck is