67 dart emissions

do what crackedback recomended but do not do what RLF Cuda recomended. in fact you should try to retard the timing as much as you can stand it if what crackedback says wasnt enough. advancing the timing will increase the idle making the vac in the manifold go higher. this will pull harder on the idle curcuit and make it go richer. you could then lean it back down but you will only get close to were you are now. setting the idle higher ill force the idle curcit to loose some vac signal and max out the idle curcit affectivley making it go lean. i know im a little late to this thread but you may as well learn the truth and why it works