Yo dude

I think that the problem might be that your carburator might be to high for proper (gravity) fuel flow. Try running with a full tank and see what happens. You might want to install a fuel pump to ensure that your carb is getting enough gas. Rick

: What is the exact timing setting for the PX200E with a Pinasco 213cc kit?. My vespa stalls after the 60km/h. It sounds like krrr, krrr, krrr. Why? What about the main jet size?
: I have 116 but maybe it needs 120. Is it right. How many difference cound it be?