1987 evinrude 155hp spark issue

betayv

Senior Chief Petty Officer
Joined
May 13, 2008
Messages
706
1987 evinrude 155hp ,new coils, new wires, new power packs, running the boat in the ocean Rpm about 4500 i can hear a spark in the back of the engine while is running and then suddenly lost power, push back rpm around 2500-3000rpm runs good again any ideas.
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Check the spark plug clearances between the wires and any ground surface. Esp, check the clearance to the cowling latches.
 

betayv

Senior Chief Petty Officer
Joined
May 13, 2008
Messages
706
is very close to the cowling latches, how i fix that the wire is short not that long, when I push RPM back comes back to normal
 
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