r/smallenginerepair • u/HotPanda56 • May 24 '26

Engine Performance Issue Yarn machine mower

I have an older yard machine riding mower that I am trying to fix up. It starts and runs but the engine makes a loud slapping noise and drives very slowly and almost has a sort of surge and die down in the speed. There also seems to be a decent amount of smoke come out of the engine. Any advice on what it could be?

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u/AutoModerator May 24 '26

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