My bike still runs, but every once in a while it feels like there's an interruption in the fuel flow or something (it lurches a little bit like it momentarily lost power.
The tach also goes to 8000 (no matter the RPM) on a regular basis every 5 seconds. I know this is a self diagnostic thing on my Yamaha, and that it's indicating something wrong with the fuel pump, fuel sender (whatever that is), fuel indicator light, or wiring between all those systems.