25 hp evenrude not running right

Zbassman

Cadet
Joined
Nov 10, 2009
Messages
7
Hello,
My Son has a 1991 25hp evenrude that we are working on we rebuilt the carburator and cleaned the fuel system. It is running and idles ok. The problem we seem to be having is when it is placed into gear and throttle is
advanced the motor bogs down. You can get it up to higher rpms by pushing the key in and priming the engine. When it is running what we think is wide
open it does not seem to have all the power it should have. My question is is the high speed jet adjustable on that engine or is it preset. We did not take it out when we rebuilt the carb we sprayed it down with carb cleaner and blew it out with compressed air. If it is adjustable how do you adjust it.

Thanks
 

outboardnut

Petty Officer 1st Class
Joined
Oct 27, 2006
Messages
323
Re: 25 hp evenrude not running right

Why did you rebuild the carb?

Did it have this problem before the rebuild or after?
 

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: 25 hp evenrude not running right

Preset and if you did not dismantle the entire carb and clean it that is your issue, high speed is more than likely plugged up. Redo it and you'll have success.
 

Zbassman

Cadet
Joined
Nov 10, 2009
Messages
7
Re: 25 hp evenrude not running right

The reason we rebuilt the carb is the engine sat in barn for 5 years and the fuel was not drained out of it.
Thanks
 
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