2000 40 hp elpto no power under load

NoXcuse

Cadet
Joined
Aug 3, 2021
Messages
14
Recently purchased a 13 foot whaler with a 2000 40 hp elpto engine on it. Engine starts and idles fine, but when you get going, boat can't get on plane and has no power. Tried pumping the ball to check for fuel issues but it has no effect. It is almost as if something in the engine is limiting power as if a sensor is sensing low water pressure or overheating and the engine is in limp mode. I do not believe this engine has anything like that built in to it? Water flow seems fine as well.

I am planning on changing the plugs and wires to rule out a spark issue (will check spark while I am doing this to check each coil). What are some other things you recommend I check to solve this issue?

Thanks in advance for your help!
 

NoXcuse

Cadet
Joined
Aug 3, 2021
Messages
14
Well I was able to solve the issue by troubleshooting. Seems the top carb was dirty. Rebuilt it and the engine runs great now. Going to rebuild the other 2 carbs to make sure everything is running well for next season
 
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