1990 mercury xr4 150 no spark

[kelly2012]

hi i have a 1990 mercury xr4 150 i am not the best with outboards the motor ran fine then sat for 5 months i pulled the plugs they are wet but i have no sprark

 

[Chris1956]

Re: 1990 mercury xr4 150 no spark

OK, First check is to disconnect the spark killer from the switchboxes, and see if spark returns. The killer wire is black/yellow.

CDIElectronics web site has a troubleshooting procedure for your motor.