Q On Lgt 12 Kohler ...rough
Posted October 02, 2012 - 09:57 PM
What are some of the reasons to make this engine run rough on idle? I already replaced points, and boiled out the carb. Tried adjusting the carb , both main and idle jet.
Speed the engine up, purrs like a cat.
Posted October 02, 2012 - 11:54 PM
Posted October 03, 2012 - 07:56 AM
Posted October 04, 2012 - 03:20 PM
Before doing anything else, just try adding an ounce of Marvel Mystery oil to the gas and running the engine for atleast an hour. You can pour a little MM into the carb while it is running too. It will remove alot of carbon and lubricate the valves and rings. I 've used it to increase compression and smooth out the idle. I add MM to the gas of all my engines because it helps them run better. Good luck.