Rebuilt Johnson 120hp no start, doesn't even want to start

tombone

Cadet
Joined
Nov 26, 2011
Messages
6
I just had the powerhead on my 1985 Johnson 120hp V4 outboard rebuilt, I removed all hoses and wires from the original powerhead carefully labeling each and every one that way I wouldn't reinstall them incorrectly later. Everything is now hooked up without issue. The engine has great compression 145psi in all cylinders, it is getting fuel, however the spark is where I am concerned. First of all I have 4 separate coils and am not sure if I mixed the coil wires (not spark plug wires, the wires from powerpack to coil) but I have a weak spark and am not sure if the base timing is messed up by incorrect installation of the coil wires, is that even possible? I can fix that, what causes a weak spark?? I sprayed premix into the carbs and the engine wouldn't even try and start, not even a sputter, or puff, or backfire, absolutely nothing......it just hung on the back of my boat looking stupid, of course not as stupid as I must have looked like working on it from inside the boat. Any help would be greatly appreciated.
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: Rebuilt Johnson 120hp no start, doesn't even want to start

Go to the CDI website, find your engine, and use their trouble shooting section to try and find your problem.
 

tombone

Cadet
Joined
Nov 26, 2011
Messages
6
Re: Rebuilt Johnson 120hp no start, doesn't even want to start

Been there, no help what so ever! My clymer manual has more information. I'll figure it out myself, thanks.
 
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