1989 25 hp Mercury no spark

MK1560

Recruit
Joined
Apr 8, 2022
Messages
4
Hi all,

I inherited a 1989 merc 25 HP. There was no spark when pulling or electric starting. I realized the throttle kill switch was compressed so I bypassed the kill switch on the CDI switch box and bingo I had spark. I then removed the throttle handle and cleaned the throttle kill. Now everything reads right on the multimeter, but no spark. I tested the side kill switch and that is working as well. I tried bypassing the kill switch again, no spark now.

When trying to start on one occasion, the electric start held in wide open position for about 5 seconds after releasing the start button before I disconnected the battery. I’m not sure what to do at this point. Any thoughts on where to go from here?
 

flyingscott

Fleet Admiral
Joined
Apr 8, 2014
Messages
8,095
Did you just pull the plug that has both kill switches attached to it.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,835
Neutral safety switch has to do with cranking of the starter.-----The kill switch has to do with spark.
 

MK1560

Recruit
Joined
Apr 8, 2022
Messages
4
Neutral safety switch has to do with cranking of the starter.-----The kill switch has to do with spark.
Yep, checked that and realized not a possible issue. I’m at a loss. I have a feeling it’s the cdi switch. Am I off? I checked the connections to the stator and trigger and they register fine.
 
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