Re: 65 hp Johnson No spark
Sounds like it's your sensor. Only concrete way to test it is to observe the sensor's output with an oscilloscope or peak-reading voltmeter. You have three, so compare the bad against the two good ones. <br /><br />If you don't have that, you can meaure the resistance of the sensor coils - if one's an open circuit, there's your problem. Be aware though that the sensor can show normal resistance & still not be putting out enough signal.<br /><br />You could also try a 12V light bulb in place of the oscilloscope or peak-reading voltmeter. If that works, please report back - it was suggested here earlier.
