Problem with etec 25 HP

[rick.fader]

I have a low hours 2011 etec 25HP motor that has a habit if cutting back to idle after 5 to 10 minutes of running at 1/2 to 3/4 throttle. Previously the motor had a broken water pump impeller and it did this same thing when it over heated. There is nothing wrong with the cooling on the engine now. Any ideas what this is about?
Thanks
Rick

[boats.net]

Have oil injection checked may be activating low oil alarm.