Thanks, After following the diagrams I still do not understand what the CA(carbur Advance) port actually does. 1. Why does there need to be vacuum applied to the Carb.
2. In looking at the digrams and various threads on the TVS it seems as if there is no distributor advance except when the engine reaches a certain overheated condition. Most engines I have worked on there was vacuum source for the distributor advance that kicked in during acceleration?