1988 Evinrude 9.9 low power

BlackoutBill21

Petty Officer 2nd Class
Joined
Dec 10, 2016
Messages
181
this is more of a story than a question. If this goes in another category admin can post this where it should be.

i hope everyone knows the value of these forums. Truly priceless . My motor had low power. Wouldn’t go fast. I knew something wasn’t right. So I searched.... and searched and searched!...

i came across this link via google

https://forums.iboats.com/forum/eng...ds/615948-9-9-evinrude-won-t-go-over-3000-rpm

after reading the whole thing which he finds someone did a botched 15hp conversion carb mod, I said to myself... what are the odds my motor has the same change to the high speed oraface plug.

I can not believe that dang plug had a 54 on it..

the service you people provide for free is just the most valuable thing on the planet! Thank you so much for putting the work you guys do!
 

RCO

Petty Officer 1st Class
Joined
Jun 15, 2016
Messages
350
It is amazing how often I hear people say that a simple jet change will change the horsepower by 50%. A carburetor can only flow a certain amount of air at wot, changing the jet can only make that mixture leaner or richer-
 
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