4.3L mechanical fuel pump to electrical fuel pump vacum line question.

[houstonnoob]

So I've sucessfully swapping a mechanical fuel pump to an electrical fuel pump however there's a yellow clear tube connecting to the back of the carburetor and the other side is connecting to the original mechanical fuel pump. I am assuming its for some sort of a vacum. What should I do with this inlet on the back of the carburetor now? Please see the picture below.

 

[Bondo]

Re: 4.3L mechanical fuel pump to electrical fuel pump vacum line question.

Ayuh,.... That's a Safety Overflow line for a mechanical pump,...

Just cap it off at the carb...