mercury 15 hp no spark?

[jetmagnum]

trying to trouble shoot a no spark condition.

can i test the coils?

can i test the cdi box?

i am new to the forum so i hope someone can help!

thank you

 

[Shadow662]

Re: mercury 15 hp no spark?

You may want to post the year of your outboard for better results.

 

[jetmagnum]

Re: mercury 15 hp no spark?

sorry it is early 90's

 

[Laddies]

Re: mercury 15 hp no spark?

First the chances of 2 coils failing at the same time is about 0. Start by disconnecting the black/yellow wire from the kill switches at the box to see if that helps. There is no test for the box you test the rest of the system and if it's OK then the box is bad, heres the OMM test for the system.