Respuesta a "Motor spits sputters for a few minutes then takes off"Had same problem, and slowly went to a no start at all, new carb got it running. Checked fuel pump, adjusted valves, brand new coil and plug. with new carb it still does it. I agree with water in fuel. I also put product in and it helped for a bit, guessing the product is heavier than gas as well as water. Drain and use non ethanol, maybe some sea foam? That’s my next move.