My truck has 2 tanks. The rear leaks, BAD! I put 5 gallons in the front tank a week ago just to get the truck to my house. I just got it. Well today I moved it in the driveway and when I shut it off the was gas dripping at a fast rate from the rear tank. I was told it leaked. But how and why was the the gas pumped to the rear? Is there a way to block it off until I replace it?

 

Please put the year of your truck in your profile. It makes a big difference in many answers including this one.

 

Its an 89 F150 XLT 4x4 longbed, 5.0, dual exhaust, C6, TTB44, 9", 6" lift, 35x12.50x15,

 

Obviously, you need a new rear tank. Click this, and scroll down to the pics showing the bed coming off:



For the fuel transfer, read these captions, particularly those about the DFR: