I have only fueled my Discovery once (been working on it ever since ), but when I tried to top it off, it leaked gas out of what seemed like the middle of the truck. I took the access panel off, and notice that the hose shown in the diagram below wasn't connected. (The one that goes to the fuel pump assembly)



Is this the vent hose? I thought I read that it was a 3/4" hose. The hose in question does go up to the filler neck area though.

Just wanted to see if I was chasing my first problem, or if that hose being off could have been another problem I didn't know about.

 

I'm having this problem, too. Did you ever get yours resolved?

 

There's (2) vent hoses, one on the filler neck, 3/4"

and that little 1/4" that goes on the fuel pump nipple.

When you top off the tank, it's above the nipple, hence, leaks out to depressed ring around fuel pump, I imagine.

luck,greg

 

camaro-
is your truck a D1? If so call your nearest dealership with your vin #. There is a recall on
D1 gas tanks, you'd be surprised how many older trucks still have this recall open.

 

Does a DI have the little vent hose on it? I did not see one on my 1997 DI, but aI do have the tank replacement done.

 

All fuel tanks have a vent tube, there is also one on the filler neck.
There is the filler neck and then a smaller tube that runs parallel to the filler neck to let air vent when filling the tank.

There is also a small hose that runs to the engine compartment from the gas tank and then back again to let pressure vent when the car is parked.
it vents into a canister usually known as the carbon canister, it collects all the gas vapors and returns them as liquid back to the gas tank.
it is a closed system and if there is a leak it will set a fault code. (EVAP leak)

In the old days before non vented gas caps all the vapors went into the atmosphere.