So I haven't been riding since the temperature started dropping and didn't have suitable gloves to keep riding. It's basically been in the "shop" for a couple months now, recently winterized, though.
Well, long story short, I had a friend swap out the chain for an RK Racing and finally got my -1 front sprocket and was pretty excited to try it out when the bad news came: the bike simply won't start!
It's done this before where it would start, stumble, and then die. Repeat several times and then it would run. It seems overall since acquiring in July that startup problems have progressively gotten worse and a little throttle would get it going but today, it won't even crank; all you here is the ignition or whatever but no stumbling.
Oil overfill might be possible (friend also did an oil change), and perhaps it is too cold. I almost wanted to just bring the bike indoors to warm it up and see if it would start. But recent Google searches have turned up results related to carburetor cleaning pretty consistently.
This video isn't of a CBR250 but it shows exactly what's happening to mine right now and the sound that you're hearing: https://www.youtube.com/watch?v=wwlw2ljGAkE
Is it possible that the carburetor is just clogged and that's what would cause this? Do I need to go on a DIY adventure with J2R
Also, unrelated question, but how much do you think I could get for mine with around 8-9k miles on it? It's got ABS, a new rear tire (as of July), new RK racing chain, new sprockets. Just curious - might help with a down payment on a house if it's worth it.