I had two petrol cans, one with fresh petrol and one with old petrol with a little cooling liquid. I poured the wrong petrol in my 2-stroke scooter. He drove 500 meters, then went out. I tried to start it again. He is always and always more drunk. Then I realized it and emptied the tank contents, rinsed it through, kicked the spark plug out a few times. D an new spark plug in and fresh petrol, and it will definitely start well again. Turns then at first quite high and then at some point becomes low-touring. It goes out with the gas. I put the mixing screw already on 2 revolutions. But always with the gas it goes out unfortunately… What would you do? Carburettor cleaning I want to now definitely still, but I’m afraid that the cylinder is scraped. Was also really stupid of me to take the wrong gasoline and I är Greetings.