Gas vent question on 72 cuda

[72CudaROG]

Hey Guys,

Ever since I got my car I’ve noticed tons of gas fumes in cab.
I don’t think my vent tubes are correct.

so four lines go from gas tank to vapor separator (inside truck), and one line from vapor separator goes across shock cross memeber but than is left open.

is that line suppose to connect to one of the two nipples on driver side of gas tank?

currently one line is capped off.
Thanks for the help

 

[70chall440]

The one capped off is a return line. Try getting a vented gas cap and see if that helps your situation, it is cheap and easy.

 

[72CudaROG]

The one capped off is a return line. Try getting a vented gas cap and see if that helps your situation, it is cheap and easy.

Got it-
So the 5th line in guessing is suppose to run up front and go into intake or carb to burn off right?

Why would a vented gas cap help, so that the vapor escapes and isn’t under my car making it’s way to the cabin? But parking in garage will still be fummy

 

[70chall440]

Correct.

The vented cap will help with reducing the fumes in the cabin but no it will not reduce fumes in the garage but then the stock vent system may not either depending upon its condition but I would think that the exhaust fumes might be a bit more of a concern.