I was replacing the lines with new silicon ones and I came across a vaccum line with a valve going into nowhere. I researched the line diagram and see that it comes from the top of the Y tube and should go into the plastic pressure tank. My question is where does the one going into the plastic tank go if its not suppose to be hooked up there. Can someone take a pic of the top of a stock motor and maybe I can trace it from there? Pic attached.

 

I can doublecheck when I get home, but I believe that this is an uncapped, unused barb on the rat's nest.

 

check it out mate, you will find few pics i posted:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/vaccum-hose-replacement-problem-771186/

i dont get the questrion, hose with this check valve goes to the pressure chamber..

 

Thats what I think too Sickboy, My question is... If its supposed to connect to the Pressure tank, I will have to pull that hose off the hard line it is hooked to and leave it open. See how the red arrows point to the one it should go to.. its hooked on to a hard line below (what goes on it if I take it off?)
Thanks again Buds!

 

mate i think u messed it all up, or i got totally different engine...

use this diagram mate, its easier with the colors:



now i took some pics of my car and it looks like u connected it wrong mate...







this right-hand side blue vaccum hose is connected to something that is marked as an empty pipe!

mate you should really take this diagram, print it out and seriously check every singlo hose again...

 

WOW! I think you're right. That's the hard line it is hooked to. Thanks for the pictures, just what I was looking for. I'm going to try it and let you know what happens.

 

Yep, That line has no vaccum on it at all so I capped it anyway and put he check valve line on the pressure tank at it purrs like a kitten. Thanks again for all the great pictures!! Saved me taking into the shop at 90.00 an hour. THANKS MATE!

 

glad i could help :]