What's this? (5L V8)

[nes138]

On the fuel purge module at the front of the inlet manifold there is a hard black line with white writing on it that runs from here then down the drivers side of the engine to a fuel line. What's it for and where does it go? (And what effect does this have?)
Tapatalk won't allow a photo at the moment for some reason???

 

[nes138]

Stupid phone

 

[nes138]

Bump. .

 

[Nut Kracker]

If I get a chance today, I'll crawl under my car and have a look where it goes mate.

 

[cor3yz]

Could be the vapour return line for the fuel tank. If it comes from the fuel system under bonnet and goes to the rear

 

[nes138]

Hmm would explain the third line on the fuel pump but can't remember where it goes in the charcoal box. What would happen if it was plugged or blocked?

 

[Nut Kracker]

There would probably be an excessive buildup of pressure in the fuel tank.