I put a big bore on my '08 Lx 50.
After the scoot gets warm - 10/15 ride . . . . it will bog/surge coming off the line and won't idle. I'll ret-start after it dies (rev'ng while i'm starting) And get it to eventually go. This process will last for a couple of minutes.
I've replaced the CDI, the fuel actuator at the bottom of the tank, and I have spark when it's not starting. The valve clearances are spot on. I feel as if I'm running out of ideas.
I've also cleaned out the carb a million times. It's tip top in there. Accel pump squirts just fine.
Fuel line replaced - vacuum line replaced . . .
Any other ideas? Short trips it's fine, but as I wrote - longer 10/15 minute trips where it has a sustained 3/4 throttle, is when this starts.
Would an improper float level cause this? It's using more gas than it can refill? I'm tempted to buy a crappy $30 carb off of amazon to see if that's it.