Hello dear forum, I bought a Piaggio zip 4t a few weeks ago. The suburb was still running without any problems but the next day it only runs 30 kmh. I cleaned the carburettor and then it almost didn’t come from the spot. But now have a new carburettor, petrol tap and air filter still the same problem. Ask me now the question what could be wrong air? the valves? does not know me too well with scooters from therefore the post office. in video: