okay, here are the vacuum lines i need help with:

https://imgur.com/a/3bTKigh
^this one looks it was cut for some reason? it is attached to the wiring harness.

https://imgur.com/a/kk9uEqr
^this one labeled C. it hooked up to the intake manifold at the labeled nipple but was not attached to anything at the other end.

https://imgur.com/a/H4SVJLM
^this is a long plastic vacuum line that i think was originally purple and half turned green from heat. or maybe it's the other way round? it seems to be long enough to connect to the pulsair system but i wanted to be sure. I plan to delete/cap off the pulsair system anyway.

https://imgur.com/a/Nh0vg8j
finally, this yellow plastic line terminates at the same apparatus the above line does. i found it disconnected with no indication of where it goes.

thanks in advance for everyone's help.

Hi *,

You should find a sticker under the hood with your vaccuum diagram.
It's wise to change out geriatric vaccuum lines to save a lot of random headaches.

Someone else can chime in on that valve.
How do you know it's broken?

Good luck, Bill