Modern Vespa

I'm dyin to know where it is and how to access the BV 350 idle adjustment
screw.

It's been stalling at idle. I'll reset the ECU by disconnecting the battery. If that doesn't do anything, I'll adjust for slightly faster idle and see if that works.

I'm bringing it in for the first service on Tuesday. I'd like not to stall at red lights until then.

Thanks!

Id bet the Fuel Injector needs cleaning. Use 1-2 oz of seafoam in a tank of gas and I bet your idle problem goes away.

PS on my GTS there is a Idler adjustment screw but I have been told not to mess with that In 7 years and 35000 miles I have never messed with it.

Is it consistent or until it worms up? Mine did that but only until it warmed up, and on only two occasions.

I'm going to do that cause it can't hurt. If it doesn't help, I just avoid complete stops until the first service

Good numbers on the GTS! I traded mine for the BV. It was hard to see her go.

Thanks.

[/quote]
Is it consistent or until it worms up? Mine did that but only until it warmed up, and on only two occasions.[/quote]

It's consistent at red lights, even when warm. I'm sure it'll be fixed with minor adjustments at first service. Thanks.

Give it a try. I use SeaFoam in both my wifes BV250 (Carb Model) and my GTS. Seems like after every 3-5 tanks of gas the idle will drop down low enough that sometime it will just die when you come to a stop. Most of the time within 25-50 miles after putting seafoam in the gas the problem goes away.

Good luck

Clogging injectors on an new engine that's only been out for a little over a year, hmmmm, hard to believe?

I had the same problem last month.

Dealer told me there is no idle adjust screw on the BV 350, it's 100% electronically controlled.

Dealer fixed idling/stalling problem, stating it was a likely fuel overfill that wetted the EVAP canister and roll over valve setup, requiring disassembly and drying out with compressed air. Good luck!

curious to see what the spark plug looks like. Also what gas are you using ? brand and octane rating?

have you cleaned the air filter?

Clogged injector on a new 350 with only a few hundred miles on the clock doesn't seem likely (though, as you say, Seafoam can't hurt ). Also, the idle should automatically reset.