Moin Together. I bought a scooter for my partner yesterday as a surprise. Nova Motors year 2017 with Lambdasonde, 4 clocks, 45 K/mh. When I drive it instead and go, everything is fine. But after reaching the operating temperature it slows down and takes no more gas. Like when a petrol tap is turned on. If I stop, it doesn’t go out and the engine runs nicely round in line. I tried the needle from the carburetor on all the grooves yesterday. It’s a new battery and spark plug. Air filter clean. The private salesman has tried something for himself. He’s always been fascinating something from Lambdasonde. Achso: And the white (motor block) light always flashes at intervals once. Can someone help you at short notice? I wanted to surprise you at the weekend.