Hello, my Vespa LX 50 4T (approx. 6.000km) has the following problem: If the engine is at operating temperature, e.g. after 5 km drive, you can notice a significant loss of power. On the straight line the Vespa reaches the top speed, but as soon as a bigger climb comes, you almost stop. At a place where I can easily get up with a cold engine with approx. 25-30 km/h, it reaches with a warm engine only a maximum of 5-10 km/h. Idle is then very unstable, so that you always have to keep the engine at a bit of speed so that it doesn’t go off. Other information that might be helpful: When starting the engine, you have to press the gas train a little bit, but then jump it immediately on the first attempt. If ma wouldn’t give a gas, it doesn’t start so easily. Is this normal? Valve game has already been set, the cold has been started. start somewhat improved, but nothing at the problem power loss improved with warm engine. Complete service with oil change, air filter, spark plug was carried out, but also here no improvements. Carburettor removed and cleaned, carburettor re-set. Also here no improvement. My first suspicion was with E-Choke, which is why I removed it and connected it to 12V. After one to two minutes the piston was then clearly out. That’s why it seems where Would be great if you could help me further 🙂 In the appendix you see a picture of the spark plug. In my opinion it looks too dark.