9.9 mercury low power

Daddyoz

Recruit
Joined
Aug 5, 2017
Messages
1
Had carb serviced, new plugs, always use quicksilver in good gas. Motors starts first pull, doesn't smoke or chug, idles great, but simply have about a third if the power we used to have. On a 14 ft jon boar. Used to just fly. Now top end is like trolling speed.
 

flyingscott

Fleet Admiral
Joined
Apr 8, 2014
Messages
7,990
Check compression and spark. I would do spark first sounds like you are running on one cylinder.
 
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