1988 mercury 100 HP no spark

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Hi all,
New here and see where everyone helps others so here i am.I have a 100HP 1988 merc outboard that will not start,I see the spark plugs are not fireing?
any help would be great.And or wireing on this motor or link to wireing for testing coils,statior,
thanks....
 
Last edited:

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: 1988 mercury 100 HP no spark

This should help
scan0003.jpg
 

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Re: 1988 mercury 100 HP no spark

Yes indeed thank you very much,I'll try this after work....
 

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Re: 1988 mercury 100 HP no spark

With no DVA meter i'm lost on this testing thing.I did try and someone told me two test the yellow wires from stater to see they grounded when my meter was on it and touched to block.It seemed to be fine.
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: 1988 mercury 100 HP no spark

The OHM readings are on the same page use them they are not as good as readings from a DVA but usually work fine.
 

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Re: 1988 mercury 100 HP no spark

Ok will do.\


thanks.......
 

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Re: 1988 mercury 100 HP no spark

Ok it was the stator and the power pac, the stator was only putting out of one side they said but now runs, then I put it in the water and it would not go lol, after looking at it I found the lower carb was not opening the little link
was broke so have one comming.we opened the lower carb by hand and it took off,,,
thanks all for your help...
 

taggers59

Recruit
Joined
May 28, 2009
Messages
4
Re: 1988 mercury 100 HP no spark

I have the same, no spark with my 1988 Searay/ mercury 100 HP outboard. It ran great last fall had it winterize, it turns over but no power to the plugs.

HELP!!!!

taggers59
 
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