Explorer
Well-known member
Patience is wearing thin. 66 Mustang, automatic, Autolite 1100 1v. As far as I know the only thing non-stock is the Petronics point replacement only. It will only idle about 1400-1500 rpm with the manual choke half way closed. My feeble mind keeps telling me vacuum leak and drawing air from somewhere else and closing choke is making up the diff. Disconnected and plugged vacuum port to dizzy and auto tranny. Sprayed everything down with carb cleaner and no leaks anywhere. Did change plugs, cap, rotor and new PCV but needed them anyway. Nothing I have done has affected it at all. Idle mix screw has no effect, but I guess it wouldn't at that rpm. Any suggestions?