2000 merc 125 saltwater 2+2 design no spark on cyl 3&4

jgraf631

Recruit
Joined
May 25, 2016
Messages
3
trying to diagnose what is wrong with my outboard no acceleration.it seems that at the cut in speed for cyl 3&4,it gets hung up and fails to accelerate.ive determined that at that rpm,there is no spark on 3&4.even at idle there should be spark on these cyls as the idle ports on carbs 3&4 are what restrict fuel at low rpm,correct?tried to nail down which part of the ignition system is faulty.thought it was the trigger assembly so i replaced that,with same results.am i now between replacing the either stator or voltage regulator? best way to test for faults in either? any input greatly appreciated
 

flyingscott

Fleet Admiral
Joined
Apr 8, 2014
Messages
8,295
Thats right I forgot that is a combo unit you need to get the manual and how are you testing for spark
 

flyingscott

Fleet Admiral
Joined
Apr 8, 2014
Messages
8,295
Get a real spark tester that you can set a gap on you want it to jump 7/16"
 
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