Quote:
Originally Posted by Mulletwagon
Had the same problem. Shot some Marvel Mystery Oil directly into the carb at elevated rpm and the engine settled down to a smooth idle. My problem was sluggish valves rather than stuck valves. The MMO approach would be a good first step before a more serious tear down. Good Luck.
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Thank you, I’ll try it. How do you identify sluggish valves vs stuck valves?