While on a cruise on my motorized bike the other day, it just bogged out and stopped running. since then it has not started. I can peddle it, release the clutch and the engine with turn over but will immediately die (i assume because there is no spark). I have since tested the spark by holding the spark plug up against the engine and turning the wheel, no spark. I have tested the currents in the wires from the magneto to the CDI and they are fine, but from the CDI to the spark plug there is nothing. Do I need a new CDI?