Pulling V.A at idle

Ironracer said
Well, I'm using a Matco dial back, I figuredit was a good light, traded a chainsaw fer it, got it from a mechanic pal o mine...Not 100% sure that my damper is "dead on" TDC.... been driving that mill for 12 years, some years daily.. Hmmm Rob, don't know if Ya remember, but remember the Detonation scare? Could the thing have spun, showing Less ?

Ironracer said
Hi Everyone, Hope All Y'all, Your Family's, Friends, and any one else are all Well! I have a quick (I hope) question.
Had a Distributor done. Finally had a Bro come by to watch the tach and run the mat pedal. Before he stopped in, I checked the idle airs... 3.5 turns out ( a buddy "helped" do that when i went to the store)
So, when I set the timing ( Vac Advance disconnected, plugged hose) it was close to where it was supposed to be...
BUT, plugs were ugly, pig rich, ( pulled em and posted em here, different post)
Anyway, when I hooked up the VA, the idle snapped back to "life"! Sounded Way Tight, like it should! Question is : Why am I pulling Vac advance off Ported Vac?
Thanks Everyone!

Haven't read all the replies yet but if this is a scenario where you have a little bit of camshaft and you only have 2 Corner idle as in primary, then there's a good chance you have the throttle blades open too far and the ported vacuum is now active.
If that were the case...you can lower the primary blades at the idle speed screw..then flip the carb over and you see a little flat head screw that adjusts the secondary throttle blades...open them just a hair more to compensate for the lowered primary idle speed... again if that's the case and there not some internal leak that's pushing fuel.
All assuming the timing is set right.