Improperly adjusted distributor points likewise cause poor performance. Points should ... The distributor might well be called the heart of the ignition system, as it supplies the current to the spark plugs at proper split second intervals. A bad plug insulator ... Be sure to consult a spark plug chart if you are having plug fouling or overheating problems. ... aquot;My Vermont car, a 1956 Chevrolet, just goes in. aquot;Since Ianbsp;...