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Outboard Loss of Power

Tannerbryce

New member
So I got a boat and motor at a great deal. I already knew the motor wasn’t running right when I bought it. It’s a 2006 Mercury 25hp EFI. I’m use to working on 2 stroke motors not 4 stroke, this is my first. So out of the water the motor will run a little rough. In the water it seems to idle fine but when I give it gas it won’t accelerate over a couple miles a hour. I thought it might’ve been a spun prop (prop bushing was tore up and in fact spun) so I changed it and it still won’t accelerate. Any ideas on what my problem might be? Motor does have quite a bit of oil in it to where it’s bubbly and way too full. Would this cause the problem? Or some kind of sensor? I also pulled the plugs and it looked to have a little water on the threads.

Thanks in advance...
 
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