1985 120HP V4 Johnson - RUNS but won't Shut OFF

[SuperDave81]

I recently bought a boat with this motor. I've got it running great, serviced the carbs changed the solenoid and starter. CDI was changed by previous owner. BUT! once it starts the only way to get it to stop is to either pull the spark plug wires off (very shocking experience) or choking it out. Please help with any ideas. I tried changing the key switch tonight and still doesn't shut it off (kill swith doesn't work either).... PLEASE HELP!!

 

[Daviet]

Re: 1985 120HP V4 Johnson - RUNS but won't Shut OFF

I see you seen the 35hp thread, check you kill circut for an open condition.

 

[SuperDave81]

Re: 1985 120HP V4 Johnson - RUNS but won't Shut OFF

Just read your reply to that thread. will do tomorrow. So if there is a complete curcuit on both ends it should be the power pack?

 

[Daviet]

Re: 1985 120HP V4 Johnson - RUNS but won't Shut OFF

To shut the engine down you need a complete ground from the engine, through the ign switch, back to the power pack.

 

[DJ]

Re: 1985 120HP V4 Johnson - RUNS but won't Shut OFF

The problem is usually in the BIG Red plug. Take it apart and clean all the pins.