Modern Vespa

good day guys. i just recently opened up my 24mm carb and i am wondering what jettings are reccomended.

my current jetting:
idle jet: 50/100
air corrector: 120
mixer: be4
main jet: 101

current setup is a px150 with a polini cast iron 177 kit(no port matching or what, srtaight bolt on install), sip road 2.0(will change to sip racing exhaust coming this month), 24mm carb.

at around 1/8 to 1/4 throttle i notice a little power loss during acceleration. idle also goes way up when engine is warm. any advice would be a big help.

Fates got a driver. Your main jet is too low. Start at a 125 and work down. I reckon you are at 116, give or take.

hello. thanks a lot for the response. i'll buy a main jet kit so i can test it out. how about the other components? should i just focus on the main jet first?

I take it you have a "G" carb?

yes it is a 24.24G.

I run 120-122 on my Malossis 166cc and 177cc. Malossi comes with a 115 main jet. Assuming that you have at least an exhaust box that should put you at a minimum of around 120 main jet. You can try the 125 main jet but I think is a hair too rich. I am running a BE3 and a 55 idler.

The idle going up when hot is an indication that the air/fuel mixture is a bit lean.