I bought a Piaggio Ciao and it runs poorly. It starts nicely but when I turn throttle it bogs down.
I have cleaned carburetor with carb cleaner and compressed air. Then it was cleaned with the ultrasonic washer. Didn't help at all. Replaced also a spark plug. Then I took the carb from my another Ciao that had exactly the same carb and it worked perfectly. (The carb is Dellorto Sha 12/10.)
Until yesterday the moped started having the same issues, with a new carburetor. If I give more gas it bogs down. If I close partially the air filter the engine runs better but almost sounds like four-stroke.. Too nice for a two-stroke engine.
It sounds like the engine is getting too little gasoline or the jet is clogged. But I had a filter for fuel, actually three of them. I also took filter off to make sure it's not clogged also and there was no difference.
Any ideas on how to proceed with this project?