Well I finally thought I had fixed my high idle problem. One of the hoses off of the vacuum switch had a tee and one of the ends was open to the atmosphere. After plugging it, idle dropped and I could set it to 800...and the car drove so much better.

Cept now it's back at 1000. I thought it might be the throttle plates not closing, but I bent the linkage tab right against the bar to try and make the plates close as far as possible (FSM says 0.046 in or so) but I still can't get it drop below 900 even with the air adjust screw right down.

Gah...I'm going to have to redo every single vacuum hose on the thing.

F-

 

The idle (after warm up) is supposed to drop to 1000 for about 8secs and then drop to 800 if everything is working correctly.

 

i'm in the same boat. almost makes carbs and they're maybe 2 vacuum lines look good.