Used to be on a 96 4Runner, 3.4, 5spd. Now it's going in a '91 4Runner, 5spd.

I am in the middle of this 3.4 swap [LINK] and am trying to figure out where these lines need to be attached. I think Number 4 needs to go back to the gas tank, but I am not even exactley sure how that needs to be plumbed. Not really looking for how to tie this box into my '91... but how this box ties to the 3.4. I know most of the lines go right to the motor and don't care what vehicle the box is in.



Pics, diagrams, answers, guesses... all appreciated.

 

All right... just got this from a friend:



So...

Number 1 connects to the intake
Number 3 connects to the air cleaner

Number 2 and 4... to the tank???

 

2 is a return to the gas tank, 4 is a breather.

 

This should clear the rest up for you.

 

Thanks guys. Looks like YT has them all covered.