Re: Electrical problem on Mercruiser 120
The flame arrestor has been off ever since it seemed to kill the motor. I had already gone through and removed, cleaned and replaced all positive side connections. Electrical status seems the same but the motor shows no sign of wanting to fire, even with a charger attached. I both let it sit and cleaned and dried the plugs.<br /><br />One interesting thing- I measured the voltage from the coil wire while toggling the points. It went from four, then to zero when the points opened, and then to around 10/12 from there. Is that initial drop normal? It also seemed like it took a while to get to 12, it didn't just jump there.<br /><br />I hate to admit it but I believe I'm close to turning this over to a pro- especially if a carb rebuild is necessary.
The flame arrestor has been off ever since it seemed to kill the motor. I had already gone through and removed, cleaned and replaced all positive side connections. Electrical status seems the same but the motor shows no sign of wanting to fire, even with a charger attached. I both let it sit and cleaned and dried the plugs.<br /><br />One interesting thing- I measured the voltage from the coil wire while toggling the points. It went from four, then to zero when the points opened, and then to around 10/12 from there. Is that initial drop normal? It also seemed like it took a while to get to 12, it didn't just jump there.<br /><br />I hate to admit it but I believe I'm close to turning this over to a pro- especially if a carb rebuild is necessary.