Smoke, high temps and louder than normal

[SkaterRace]

I went last night to fill up the power steering fluid in the boat and make sure I am good on that since it was sitting lower than it should have. When doing this I had to run the engine and noticed the smoke/smell of fuel pretty fast but figured that was because it was cold and the engine was louder than normal. I then went to the wheel to turn it to work the power steering and noticed the temps were going up very fast, much faster than normal. I shut the engine off and came home.

Any ideas what it might be? I am taking it to a mechanic soon hopefully to have them look at it and repair it.

 

[racerone]

Water pump impellers need to be replaced about every 5 years.------Best investment you can make and easy to do.

 

[SkaterRace]

Water pump impellers need to be replaced about every 5 years.------Best investment you can make and easy to do.

Hmm that would be awesome if it was that. Any idea how big of a job that is on a Mercury 225XL OB? I've only ever had in/out before.

 

[Chris1956]

Impeller replacement is the same on most motors. The gearcase must come off, the impeller, wearplate and 2 gaskets must be replaced, as a minimum. If the cup in the waterpump top is scratched, replace that. If the waterpump base is melted or the driveshaft seal is bad, replace the waterpump base.

 

[SkaterRace]

Boat is going in tomorrrow to see what is wrong with it. I did some testing and looking into what I could on the engine and YouTube. Came back pretty much with just about everything is well beyond my mechanical ability and that I really should take it to my mechanic to see what he says.