No spark in the cylinder

rainerr

Recruit
Thread starter
Joined
May 25, 2010
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1
A frind of mine has a 1992 Force 40 hp outboard which this year has refused to run. It started to run poorly last year. We have a spark, with the plug removed from the cylinder. With the cylinder under compression you obviously need a stronger spark to overcome the the higher air density. That leads us to believe that the output voltage of the stator, which feeds directly into the switchbox, is not high enough to generate a strong spark in the coil. We have consulted the local "experts" and it has been suggested it is the stator. Before we start throwing parts at this engine to fix the problem, does anyone know what the resistance should be in the stator winding. Unfortunately this info is not available in his shop manual. Thanx
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: No spark in the cylinder

First see if the spark will jump a 1/2 inch gap If it will not, then yes it is a weak spark. If it will, look for other problems
 
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