So long story short, I purchase what was supposed to be a "just finish bolting in the engine" project from my brother. Wrong. Now that I have managed to find all of the wire routing, I am wondering where all of my vacuum lines go. My service manual doesn't give a good description or any diagrams. I don't have the one under hood as it has rubbed off I'm assuming. So the only vacuum line I do not have hooked up would be the power brake booster. Would anyone be able to tell/show me what I'm missing. I haven't been able to find any place for the hose to go at all. The engine that came in it was from an Astro so it is possible that the vehicle is missing something that the Blazer requires.

 

The truck year and specs would help.

As well as if its a second gen, there's a thread on here of a full vacuum line replacement guide that christine did.

Worth a search

 

i apologize for that. It’s a 96 blazer ls. Every vacuum guide doesn’t tell me about the brake booster that I’ve seen.

 

Hmmm ill try and remember to take a look for something tomorrow on my break.

 

That would be appreciated. Thank you.

 

So I've been googling around and it looks like maybe the "T" fitting is supposed to have a line that goes to it? I am unsure of that to be true since none of the pictures or documentation really showed or elaborated on any of it. In the end I may just make a fitting on the upper plenum, if all else fails.

 

I'm not finding much myself... there's a couple of 96 owners, maybe a quick pm asking for a pic of under their hood could help? I can't think of the names off hand, but they are around and still active.

 

I went to the junkyard for something else and checked while I was there. There is a plug in the plenum that has a hose fitting on it. The Astro just has a cover where the fitting would be. So needless to say, I have gotten the correct vacuum set up for it now. I checked online for the plug and couldn't find anything just in case someone else has the issue but I can't find any information on it.