Ns18c2 No spark

[Slicknick88]

Ok so got this boat motor a while ago it ran than one day no spark I replaced the CDI unit and than the Coil and also the fall out safty still no spark decided to mess with it lastnight got spark and ran great went back out this morning and once again no spark ??????? Can anyone give me any ideas???

 

[tohatsu_guru]

Service manual....You have to test the ignition system parts to see which one of them is bad.

 

[pvanv]

"I replaced the CDI unit and than the Coil and also the fall out safty" Are you serious?

Too bad you didn't do a diagnosis with the aid of the Factory service manual at the start. Now you have thrown a coil, kill switch, and CD box at it. While you are just throwing parts at it, you could install an exciter and a trigger -- then you will have only installed one more part than you needed (at this point), and you won't have to test anything at all, since you will have replaced 100% of all parts in the ignition system.