Sorry everyone, I did read a lot of posts about vespas with id
le issues, but I might have a unique situation. I have a 78 variated bravo, and I had a rattle coming from what I thought was crankshaft bearings. This bravo sat for years, stored the wrong way, so I thought, hey, rebuild the motor. I bought a budget crankshaft and stock size cylinder kit, installed it with new bearings seal and gaskets, all from Denny cycles, and thought hey while I'm at it what could opening up the intake hurt? So I also drilled the intake to 13mm and used a rat tail file to open the intake patch only a few mm up and down. I got a carb rebuild kit and Tecno exhaust from treat's, rebuilt the 12.10 (45 jet) carb (now with 50 jet from treat) and gave it a shot. It refuses to idle, but runs great at part to full throttle. I know I cleaned the carb all the way, not my first carb. So I figured, let's throw $18 more at it and got a clone 12.12 carb (48 jet), stripped that rotten monkey to bare bones, even had the emulsion tube out, used a dremel to clean up it's nasty cheapness and tossed it on the bike. Same result, no idling, but way more power when revving, it maxxed the poor little stock variator in about two seconds. What have I done to make it not idle? All comedians and mechanics welcome to reply thanks guys the pic is the clone carb after I horsed around with the emulsion tube