no spark on 90hp 1990 merc

PDionne

Recruit
Joined
Apr 2, 2007
Messages
4
I have a 1990 merc 90 that is not getting spark to any plugs. It supposedly ran fine last year until it was winterized, now with new plugs it won't start. Are there any common trouble spots on these motors that I should check?
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: no spark on 90hp 1990 merc

Did someone pull the kill switch lanyard?
 

PDionne

Recruit
Joined
Apr 2, 2007
Messages
4
Re: no spark on 90hp 1990 merc

Ive checked all kill switches. As far as I know there is only one at the throttle control.
 

w2much

Lieutenant
Joined
Jun 22, 2005
Messages
1,292
Had the same problem and it scared me to think of diagnosing it. The manual has some simple procedures to test the stator with an inexpensive ohmeter. I found that my stator was bad. Purchased one on eBay for 80.00, problem solved. Good luck.
 

PDionne

Recruit
Joined
Apr 2, 2007
Messages
4
Re: no spark on 90hp 1990 merc

I have discovered a broken magnet under the flywheel. Is this at all common? What are the odds my stator is also damaged (I haven't removed the flywheel yet) Is the flywheel puller a special tool. Finally...does a flywheel really cost $400...yikes.
 
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