03 Mercury 25hp 2stroke issue - model 1025301AD

[NealLauderman]

I have been very luck in the fact that I haven't had many engine issues since I bought this boat last year. Well Saturday morning I was on the water doing some trolling when I heard a steaming noise and looked back to see that my motor was no longer peeing and steam was rolling out of the pee hole.

I turned the motor off and waited a few minutes and turned it back on and it started peeing again. So I started trolling again (this time back towards the boat ramp, lol) and after about 4 minutes it did the same thing (quit peeing and steam started coming out) so I shut it off immediately.

I trolled for a good hour back towards the ramp with my trolling motor and decided to give it one more test before loading it to go home. It started peeing right away and within a few minutes the pee turned to steam. I shut it off and loaded the boat onto the trailer and went home. Since I was in brackish water I wanted to flush it when I got home and hooked it up to the hose. It started peeing like normal and I couldn't reproduce the issue with it hooked up to the hose.

Does anyone know what kind of issue this sounds like? I pulled the lower unit off to look at the impeller and stuff and it looks okay to me but to be honest I don't have much knowledge when it comes to boat mechanics.

Below are a few pictures I took.






Does this look normal? Not sure what all this is? I rubbed my finger on it so that is why it looks smeared in the one spot.

 

[doghunter9]

Re: 03 Mercury 25hp 2stroke issue - model 1025301AD

I have been very luck in the fact that I haven't had many engine issues since I bought this boat last year. Well Saturday morning I was on the water doing some trolling when I heard a steaming noise and looked back to see that my motor was no longer peeing and steam was rolling out of the pee hole.

I turned the motor off and waited a few minutes and turned it back on and it started peeing again. So I started trolling again (this time back towards the boat ramp, lol) and after about 4 minutes it did the same thing (quit peeing and steam started coming out) so I shut it off immediately.

I trolled for a good hour back towards the ramp with my trolling motor and decided to give it one more test before loading it to go home. It started peeing right away and within a few minutes the pee turned to steam. I shut it off and loaded the boat onto the trailer and went home. Since I was in brackish water I wanted to flush it when I got home and hooked it up to the hose. It started peeing like normal and I couldn't reproduce the issue with it hooked up to the hose.

Does anyone know what kind of issue this sounds like? I pulled the lower unit off to look at the impeller and stuff and it looks okay to me but to be honest I don't have much knowledge when it comes to boat mechanics.

Below are a few pictures I took.






Does this look normal? Not sure what all this is? I rubbed my finger on it so that is why it looks smeared in the one spot.

Did you fix it, mine has the same problem, my impeller looks good? I have had mine apart a few time know no luck?
If so what was your problem?