Idle fluctuation

[74260ZMan]

So recently i took off all of the smog stuff on my 74 260Z. Its been sitting for over 10 years and recently ive finally had it running. when i first got it running it would run pretty well, i rebuilt the carbs and they seemed to be running smoothly, now i finished plugging up all of my holes in the balance tube, its hard to start and when it does start it needs to be choked up pretty good. if i let off of the the choke even when its warm the idle will fluctuate and go up pretty high and then drop down really low so its barley running or it will die, then it will just go up and down. I dont know what its jumping up to or what its going down to since my tach isnt working, could someone PLEASE help me?

[d240zx2]

Sounds to me like you've got a vacuum leak somewhere. Are all the hoses intact...not cracked? Plugged in to the appropriate place? Carb shaft seals fresh and not leaking (had that problem on my old SUs)?

Frank