In the fuel tank's filling neck, just behind the fuel tank cap. There's a hole that is used for degassing.

Where does this go to? This hose doesn't go to the fuel pump cover?
Where does this degassing go to?

Anyone knows?

 

It's too hard for me to tell from this pic but I thought it went to a charcoal can then back to the fuel tank.

Sorry, I guess I'm not much help.

 

from your picture i can see two lines
1. the one with the yellow plastic clip goes to the fuel filter.
2. the one with the metal ring clip is the return from the preasure regulator.

unless there is another picture i can't see those are the only hose i see.

if your are talking about the little hose that runs next to the filler neck and into the small hole on the neck, that is a way to let the gas station pump stop when you fill up and lock the handle.

 

OK , EGB18hatch , FUEL . I make mistakes. But Do you speak French , Dutch , English and German like I do ? OK you got me there , but I admit that sometimes I make spelling & typing mistakes. I am not perfect , are you ?

 

Thank you Sir,
Its part n° 26 that I would like to see a little bigger , I want to install an aditional fuel cell in the back , so I can , if the oem tank is empty, pump fuel over from the fuel cell in the oem tank. I was thinking of doing tgis via the degasation tube , so I do not have to drill and extra holes , I will use this small tube to pump fuel in and also will use it as an retutn line to te extra fuel cell , when the oem tank is full , the fuel can return also via this tube to the returnline on te extra fuel cell.

 

the second tube in the filler neck just goes to the tank next to the main fill tube.
it is not for degassing, its just there for when you overfill.

 

you could "T" the return line, (i think) the should work as well, or run the return line into your fuel cell, then run a line fron the cell to the return in the tank, but just bake sure your fuell cell is higher.