I've been having a issue with my 7hp flathead vertical shaft Briggs and stratton engine. It has been running rough. Real rough. It runs poorly. Most commonly it will occasionally stall and then run when the throttle lever is moved. It depends on what it likes, Sometimes it will stall and it will want less throttle, then sometimes it will want choke! It has a large flo jet carb. Looks very prehistoric and gross lookin. So I would prefer not to take it off the engine. What is the issue? back in 2017 i put a light amount of seafoam in the gas and it ran really good. Till it sat again for a year and now runs the same as it did when i first got it out the junk pile! It also at a higher throttle level surges, Quite badly. Not saying its a problem, It just may contribute... any suggestions? Again sea foam fixed it in 2017. Ran great till it sat and i revived it... think it could use some more seafoam?
All replies are thanked