'06 Mercury 9.9 manual start mis-fire

EddiePetty

Lieutenant Junior Grade
Joined
Aug 25, 2008
Messages
1,008
Model 1F10201FK Intermittent miss on the upper plug. When it does fire the spark is VERY weak. The lower plug fire weak continously. NEITHER will fire a spark tester. To avoid replacing expensive parts un-necessarily, does anyone have a idea how to isolate the defective unit(s)? I would also lke to find electrical value for the trigger, ignition stator, control module and coil. Any help is appreciated!
 
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