Unsteady Idle

[Saltshaker]

I have a factory dist with a petronix...18 int, 38total and my idle is set at 900rpm. My idle is always
Changing....sometimes it’s 900 tonight 1050 and on the way home 800rpm what’s going on
Jon

[fastf67]

Nobody else, my 2 cents and here's both: LOL
I think I would be looking more at the fuel system, not so much the dizzy for erratic idle jumps. Are you using a timing light and seeing it move? A dizzy problem usually moves slower up or down the rpm range or cuts out. It could happen just not as likely, and with your past posts I've seen you had a carb issue also after the body shop? Any air leaks around throttle shafts or vac lines? shafts closing correctly to the transition slots? A air to fuel ratio in the idle circuit can change rpm fast and easily.

[BattlestarGalactic]

Ditto, I'd look at the carb.  make sure it has enough spring to return fully.  Make sure secondaries aren't opening/changing.

I'd also just check to make sure advance plate is returning fully.  If it can move around at idle, that could be screwing with you also.

[Saltshaker]

Took the plate off the dust, there was a sleeve on the post. The sleeve had come off
Jon