Bump!
Still having problems with this. To recap, the problem is that when the engine on my P S 250 is cold (first couple minutes or two of riding), and the auto-choke has come down, the bike sometimes idles low, and occasionally stalls. It doesn't happen every time, and once the bike gets warmed up it's fine.
The solutions I've tried so far:
1) Turning up the idle--at first it seemed to fix it, but it didn't. I don't think I can turn it up anymore, since it's already revving pretty high once it's warmed up.
2) JPrestonian said it might be the air intake, so I tried his trick of spraying ether around those tubes on the carb and seeing if the engine revved. They didn't, but I tightened the clamps anyway.
3) The guy at Autozone said I probably had debris in my carb jets, so I got some Seafoam. I've run a little bit through there, and haven't seen any improvement, but I'll keep using it.
Any other suggestions? I'm considering taking the plunge and bringing it to a professional, and the nearest reputable one is 80 miles away. I want my scoot to work perfectly! Could this potentially be a warranty issue? If so, I should take it to a mechanic soon, since my warranty runs out in 3 months. Thanks!