[electroanalog1]

To the left of the brake booster vacuum hose is an open port and I don't know where it goes. The fuel pressure regulator is taken care of and also the front motor mount is occupied. Can't find a diagram. So far I don't know if it just needs a cap.

 

[electroanalog1]

I've been looking for any open hose, stray piece or other port missing this entire tube. I capped it for now. However it is a little rumbly with a long start.