Mariner 90hp spark

[walleyechaser]

I have a 1984 mariner inline 6 90 hp motor with no spark on cylinde #3. I tested the no spark by removeing all of the plugs then cranking the engine with the plugs grounded. There was no spark on plug no 3. So I then changed the coil wires between coils 2 and 3 and then plug #2 didnt have any spark. Does this mean that the switch box is bad? What else can i check. The coils all ohm out the same between + and - about .2 ohms and about 950 ohms between the coil wire and the plus terminal

 

[lonewolf5347]

Re: Mariner 90hp spark

If you swap the coil wires at the swichbox and problem move to another cylinder yes the switchbox needs to be replace.