85 50hp merc - no spark in cyl 3 and 4

krawczmwk

Seaman Apprentice
Joined
Mar 17, 2010
Messages
41
I have been having problems with a going wot and engine with no power. In low speed and in neutral it runs fine. Under load, no power. I thought it was a fuel problem so I rebuit the carbs and fuel pump. Today I noticed when I changed the plugs, that plugs 3 and 4 look brand new. So I am assuming no fire on those 2 cylinders.. Can anyone give me a sequence to begin troubleshooting. Not sure if it is the stator or something else.

Any suggestions would be very appreciated.

thanks
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