I think the exhaust pipe is clogged, in the next video I will try to make a new exhaust resonator, according to the drawings that 190MECH calculated, many thanks to John, and to 49ccscoot.com
My second channel https://www.youtube.com/channel/UCrzXnc1kHhCY3-qNklpnDeg
Chuprun Irina https://www.youtube.com/channel/UCW2emHfMJevX9ckN76QIJYg
Email makulaturafis@icloud.com
Instagram https://www.instagram.com/samodel_workshop/
Donat MasterCard 5169 3600 0594 9783 Chuprun Oleg
DIY Honing Head https://youtu.be/b0AciN4YqRY