Can't get carb to idle down

[johnson350]

So I'm in the final stages of my ECM deletion.

Got my regular non-computerized dualjet rebuilt and put it on. It started right up, but quickly jumped to around 1500-2000 rpm idling in park. So i backed the idle set screw all the way back till the throttle plates won't go back anymore, but it still idles waaay too high.

All the vacuum ports I'm not using are plugged off, i've checked and rechecked the torque on the mounting bolts and airhorn bolts. Tryed playing around with the mixture screws, no good.

When rebuilding, I did remove the metering rod adjustment screw (then later read NOT remove it, stupid me), so not sure if it's still in the same original place or if that would even affect the idle speed. Float is adjusted to the proper height. Choke works perfect.

Don't know if the jet size would affect this, this carb originally came off a 79 chevrolet v8

 

[axisg]

how is the choke setting ? Is the fast idle cam engaged ?? If you youtube qjet fast idle cam it will explain it much better than I could

 

[Appollo]

have you tried disconnecting the throttle cable just in case it's the cable/pedal adjustment.

 

[johnson350]

I checked the linkage, it is fine, allows the throttle to close all the way. As for the choke, I'm beginning to think it's an incorrectly adjusted choke. It's like its stuck on high idle and won't kick off. Will have to have a better look at it tomorrow.

 

[johnson350]

Well that was easier than I thought. Since I converted to electric choke from the hot air choke setup, that screw on the passenger side for the choke was waay out of adjustment. Still haven't ran the car yet, but it should fix the problem now that the throttle plates close all way now.