So can't figure out what this line is or where I can get a new one. It goes into exhaust manifold on the passenger side. Any help would be appreciated or if there's a way to fix it. Couldn't get a great pic but basically the line had a hole burnt through it about 1/2 an inch long. Didn't go all the way through the other side though. Almost looks similar to a brake line but obviously it's not.

 

What did it hook up to?

All we can tell from the pics is, it's a piece of red rubber hose with threads hanging out.

Looks like also, the AIR injection tube is rusted through at the left-hand-most cyl in the first pic, right at its 90° bend...

 

The line with the hose isn't what I'm referring to its the other one the steel line or whatever it is

 

Oh... I guess I guessed wrong what you were asking about.

Well then, that piece of red rubber hose, whatever it goes to, has a hole in it, in addition to the AIR injection manifold being rusted through.

 

The red rubber hose is a temp fix on something till tomorrow when I can get a new part, the air injection tube I suppose is the only thing I guess I needed help with. How hard are they to replace

 

Not too bad; not much worse than anything else.

Rotate all hardware counterclockwise. Allow gravity to take over. Installation is the reverse of removal.

In the case of those specific things, getting the flare nuts out of the manifolds is the only thing remotely close to "hard".

Get a new AIR check valve instead of trying to get that old one off... looks like it's in about the same overall condition as the tubing manifold.