I'm going to work on testing the vacuum, I couldn't find any vacuum test loaner kits or some on sale, I'm just going to have to buy one online.

Edited July 1, 20195 yr by SeKcGamer

A couple of things. I could not view your first video.  The second one has problems.  It's either frozen or choppy and shaken on my screen. Maybe it's too large?  But from what I could gather out of it, The idle does not seem bad, nor does the fuel pressure at idle,  albeit a tad low, ( but that could the pressure gauge).  What I did catch was a floating EFI ground wire that is supposed to be attached to the manifold and some cut hoses at the carbon canister..   Back to where you mentioned you still had some unattached wiring.  I recommend this web site.  http://www.atlanticz.ca/zclub/techtips/ created by Philip, a member 240260280, that is an absolute essential bible to help understand your car, complete with pictures and explanations of how and why to do things, This page in particular,  http://www.atlanticz.ca/zclub/techtips/electricalconnections/index.html  ,shows where all the ground connections go.  Your Z has come a long way but I suspect that  maybe there is a bunch of little things that are causing various issues like you're having.

Edited July 1, 20195 yr by gwri8

I’ve managed to fix the issue with the efi ground but I’m having trouble finding these in the wiring diagram as far as the one near the ignition coil. And I’m going on a guess that the big housing thing is for vacuum but I don’t know how it’s supposed to be setup. I’ve search on YouTube to see how other cars have it placed. Never found it??‍♂️

I’ve also seen many z’s without this

No offense intended but after going through the video again, you really need to spend some quality time sorting out your engine bay. After freeze framing your vid there are a ton of small/medium problem areas. I really don't know where to start but here are a couple of images from a google search of how a stock 76 L28 should look. If you look closely you should identify your parts pics from above and their locations. Unattached components is never a good thing.  

You are missing a vacuum bottle (the white one in the pics).  So you have a few obvious vac leaks from either cracked  or missing vac lines.  Pg AC36 in your FSM shows where a lot of vacuum lines are attached.

 

And I have know Idea what this contraption (spring) is for....

Edited July 2, 20195 yr by gwri8

The spring is the throttle pedal bounce intensifier pretty rare part


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