Moving this to a "Repair" thread , originally a part of a "Performance"-question.
Vespa Bravo. I tried the suggested setup: Dellorto 13/13 carb, malossi air filter and tecno circuit. Nothing else is done, everything else is stock.
With the 58 jet that came with the 13/13 carb, it four-stroked a lot at WOT which I interpret as a too rich jet. So I tried 52, but now it is hard to start, have to use choke which I never needed before. Even when riding I have to push and keep the choke, if it comes out, it dies. And even when holding it, the engine dies as soon as engine gets warm or slightly uphill. I am afraid of riding it, fear of breakdown.
I got the suggestion that it's lean, but how the hell can it be lean with 52 when super-rich on 58, can't imagine that.
I have no clue what to do, what are your suggestions?