Why is my Blowback gas scooter carburetor when the engine is running?
Vespa Troubleshooting
Waves shock induction. The problem OK when the air filter attached. IE. The air filter is soaked with fuel? If not, no problem. If not installed, then Set to an STD, which should be remedied. Not surprisingly, just a nuisance to those who do not understand what is happening. With the OEM intake system, which should not happen when the system is fully installed.
Basic Maintenance of the Stella Scooter. Part 2 of 4