I tried posting this in engines, maybe this is better. I havent had my car started for many months, its a 350 in a '67. when i start it, it doesnt idle well, it runs extremely hot, and it has an almost rythmic backfire from the tailpipes, and occasional backfire from the carb. I can retard or advance timing, it still does it. any suggestions?? I really dont know which direction to start at..