Hi guys,
I need some help urgently. My 1988 1.8 gti cabriolet has developed a leak in the fuel system. I have traced the leak to a unit that sits directly above the fuel pump. It has 3 pipes attached to it (maybe more?). I can find reference to this in a VW manual that i have but it doesn't specify what the unit is for me to order another. Not all MK1 gti's have them, i checked a friends 1983 mk1 but his didn't have this unit?

Does anybody know what this unit is? One pipe that comes out of it goes directly to the fuel pump. I know that it isn't the pressure accumulator.
Any help would be much appreciated.
Thanks
Tom