1984 Mariner 75hp

[cstyvaert]

My 1984 Mariner 75hp has no spark in cylinders 3 and 4. Have checked coils and they are fine. Any ideas or thoughts would be much appreciated. Thank you

 

[haventaclue]

Did you switch coils to see if problem moved? If it didn't,trigger or switchbox

 

[cstyvaert]

Did you switch coils to see if problem moved? If it didn't,trigger or switchbox

Yes I switched both coils and it stayed the same . No spark for cylinder 3 and 4

 

[haventaclue]

Test trigger,if that tests OK,switchbox

 

[Ed-Mc]

Download a copy of the CDI Electronics Troubleshooting Guide:

http://www.cdielectronics.com/support/

 

[faztbullet]

Switchbox.....