Hi...Johnson 115 hp won't spark

Stan911

Recruit
Joined
Mar 9, 2006
Messages
5
I bought a used boat and it came with a 1977 johnson 115hp v4. I was able to get the engine to crank but I am not geting any spark at the plugs. What should I check?
 

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: Hi...Johnson 115 hp won't spark

First thing I would do Stan is disconnect the large red plug at the engine. Jump the solenoid to crank the engine and see if you get spark. If you do, problem lies in the control box....most likely the ignition switch itself.<br /><br />If still no spark at ANY cylinder, most likely the power pack is shot. However, the charge coil in the stator could be bad also. The charge coil provides the power to the pack. You will need to do a cranking test to check the charge coil output with a peak reading voltmeter. <br /><br />How are you testing for spark? Are you using a spark tester? Harness wiring looking OK?
 
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