Mercury 1150 no spark?

[Ricky_rich]

I have a Merc 1150 from 1970 that have lost the spark. With the ignition on, I have +12V on the red connection. But on the green one that goes to the coil there is nothing. It should be +12V there or?

 

[Chris1956]

Do you have power on the ign wire to the switchbox? That wire would be white.

 

[racerone]

I do not believe 12 volts goes to the coil on these ignition systems.-----Something much higher.----Go to ---cdielectronics----website for the trouble shooting info.

 

[Ricky_rich]

Thanks for your answers. I went out in the garage to check voltage on the white connection. Had +12v there as well as on red connection. Checked for spark again, and I had that on all plugs!! Don't know what the problem was yesterday?? So now that part looks ok.

 

[Watermann]

Has the wiring harness and electronics been replaced on your motor? They're notorious for having rotten wire sheathing and will cause all manner of electrical issues.