Not Ranked
Check intake gasket, I had a miss and chased it with all the normal stuff wires,plugs, cap, roter even wen't through carb nothing. Even sprayed intake gasket for vacuum leak nothing. Found intake gasket was leaking from the under side. Take carb off shine light and mirror down runners and if any are dark where they mate with the head there is likely your problem. Some engines were installed with gaskets that diden't work well with the heat cycles of aluminum heads and intakes.
Bill
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