Fuel Regulator vacuum lines?

My vehicle listed above has been sitting inside for the last 10 years with "modern" gas in it. I had to replace both gas tanks/sending units/trunk mounted fuel pump. Canister filter, and several rubber lines. I then it has new gas through the system, through the fuel rail, through the regulator and up to the injectors. Gas would go no further. I flushed the system from the main fuel supply at the firewall back to the trunk.

Last week I installed new injectors and reassembled everything. The car started right up after I pressurized the system.

It ran well for a few minutes, but then bogged down (like a too rich carburetor engine might do).

I stopped at that point. Today I tried to restart the car. It cranked over well and tried to fire. I pushed the gas pedal down part way, and it fired right up. I held it at 2,000 RPMs until I had water temperature reading okay. (All gauges read normal).

I then lowered the rpm to idle (about 700 RPMs). The engine started bogging down again, so I shut it off for the day.

The only dash light that came on was the "Oxy Sensor light. Book says I need to replace that, but that should not present the problems I'm experiencing?

When reassembling the injection system, I encountered a problem. I forgot to mark two vacuum hoses!

1. A very long hose was connected to the fuel regulator at the front of the fuel rail. I did not mark the other end.

2. Also, two short (maybe 4"?) Vacuum hoses were connected to the two fittings on the "Cold Start Injector" (Orange in color) mounted on the underside of the fuel rail. One of the hose fittings was on the side of the unit and the other was on the bottom of the fitting. One of the short hoses was still connected to the “side” fitting and the other end of that same hose ran down to the side of the block. The other short hose on that injector was just hanging there. I had not marked that end of the short hose either.

Back to the long hose connected to the fuel regulator; when I stretched it out to its full length trying to find to where it might connect, I saw that it was just long enough to connect to the bottom fitting of the cold start injector.

I then removed that short hose and pushed the long hose from the regulator in its place.

The car did start again (see my above paragraph mentioning 2,000 RPMs) but bogged down after five minutes running when I lowered the rpm to idle.

I have searched my Haynes repair manual (a marginal reference book in my opinion), and spent many hours online searching for info on how to connect these vacuum fittings/hoses, all to no avail.

I rarely miss marking things like I did here. I still think I have routed those hoses correctly; in which case I need to look elsewhere for my idle issue problem.

I hope that stumbling on website on my internet search will yield some valuable information for me.

Sincerely,
Trevor