Mercury 70 HP only 2 of 3 plugs spark

Scottbuck0

Recruit
Joined
May 18, 2003
Messages
1
I have been trying to start this damn engine for days. I have replaced the trigger and plugs and still get no spark on the lowest plug, every once in a while it will spark . I reside in Puerto Vallarta, Mexico and parts are very hard to find and expensive. I think the stator is working as two plugs fire fine. I need help, I'm a chef not a mechanic.
 

12Footer

Fleet Admiral
Joined
Mar 25, 2001
Messages
8,217
Re: Mercury 70 HP only 2 of 3 plugs spark

Welcome to iboats.com :cool: <br />Rule-out the coil by switching them. Take the two (the one not fitring, and a known good one), and switch places. If the dead spark moves allong with it's coil, you lucked-out, and need to only replace the coil.<br /><br />If not, time to get the manual, and look at the switchbox with bad intent.
 
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