Sorta, but that’s not usually from burning the fuel. Ethanol attacks rubber in older engines, so that can be a source of gunk.
But usually it’s because ethanol absorbs water and small engines often sit longer with fuel in them. Also, when gas with ethanol evaporates, it leaves a varnish that can clog stuff up.
Also, it has more oxygen available and can burn hotter, which is rough for some small engines, especially air-cooled ones.
Sorta, but that’s not usually from burning the fuel. Ethanol attacks rubber in older engines, so that can be a source of gunk.
But usually it’s because ethanol absorbs water and small engines often sit longer with fuel in them. Also, when gas with ethanol evaporates, it leaves a varnish that can clog stuff up.
Also, it has more oxygen available and can burn hotter, which is rough for some small engines, especially air-cooled ones.