I have a 62 223 with a Holley 2043 carb. pretty much like a 1904, I rebuilt the carb. 5 yrs. ago this year it started idling a little rough, highway use was fine. did a complete ignition tune up, it always ran better with an advanced timing to 8 deg. Still idles rough was told by better mechanics than me to go thru the carb again, just did that runs worse than It ever did. Looking at some other posts gave me some ideas the look at. Couple of questions, everyone talks about using a vacuum gauge to set the carb. where are you plugging the gage into? disconnecting the advance to the dist? One thing I noticed was when switching parts, the new kit came with 3 new metal balls, 1 tiny one for the pump diaghram spring, 2 larger ones for the check balls in the carb, the well with brass wieght had smaller ball would that make a difference? Thought maybe I originally put it together wrong. Getting ready to go back thru it again sure seems like something in the idle circuit, prob. should have left it alone. Any input apprec.
Charlie
Charlie