89 jhonson 150 gt

river rat1

Seaman Apprentice
Joined
Aug 20, 2011
Messages
43
hello all here my ? the engin was runing fine and now i have no spark whats worng any help whold be very nice i was thinking inciton coile but they all cant be bad i hope it something simple lol is there any fuze anywere thanks
 
Joined
Oct 22, 2007
Messages
2,598
Re: 89 jhonson 150 gt

Look up the thread "free wiring diagrams" and follow the links to that. Find an engine that's close to yours (the carb engines are all going to be pretty similar).

It could be a bad ignition switch or safety kill switch, the wire to the ignition is supposed to be grounded when you want the engine to stop.

From there it starts getting expensive in a big hurry, a bad stator, power pack, or timer base could cause this. You really don't want to just start blindly replacing parts hoping to fix it, it'll get real expensive real fast.
 

river rat1

Seaman Apprentice
Joined
Aug 20, 2011
Messages
43
Re: 89 jhonson 150 gt

ok i just check my engin i have spark sometimes and sometimes not hope that helps to give me a better diration thanks
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: 89 jhonson 150 gt

You can find excellent troubledshooting information in the factory service manual (the only one to purchase) at: outboardbooks.com. Also, you may find relevant information on the web at: cdielectronics.com You will need some electronic test equipment, including a special peak-reading voltmeter.
 
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