my motorized bike quit on me today as I was riding. Had to stop at a light, started to peddle, let loose the clutch and I had no electrical start, no sound nothing. I checked the wiring (all good), the spark plug was fine. Inside the casing was a small amount of fluid (gas/oil). I even went so far as to replace the ignition box. And still no power. This is my only means of transportation so is very important for me to have running.