I have a 04 cbr600rr and there is something wrong with the fuel gauge and I have no clue where to start. The gauge on the speedo reads full all the time. I let it empty all the way out and it still says that it is full. I tried looking in the manuel that I have and I am getting a headache trying to read through everything. Any help or suggestions would be great.

 

can anyone help

 

what if the gas gauge lights up when the key is on, but when its running it does not light up at all?