Where's the water coming from???

[WhiteRice]

1997 Evinrude 25HP 3 Cyl. Been doing a lot of work to this and the last major thing I did was inspect the flywheel key (motor will not get to WOT). After inspecting the key (was not sheared) and test running the motor, I have oil mixed with water slowly dripping from the upper exhaust next to the pisser. I pulled the head and the 3 O-rings were in really good shape and I could see no visable water corrossion . I ran a new bead of high temp RTV around the outer edges of the head surface, cleaned the head surface, re-assembled the head and let cure. Started back up and within 5 minutes I had mixed oil coming form the upper exhaust again. I am taking it out on the water tomorrow to check if I have WOT now that I have done some work to it but I am concerned about the water intrusion. I have noticed that plates where my high speed orifices are located will have condensation on top of them after running for a few minutes. Is this normal?

 

[ondarvr]

That would be normal, the water mixes with the exhaust in the housing and exits there and through the prop.

 

[WhiteRice]

Ok. Just so that I understand you correctly... I will have mix from the prop AND upper exhaust?

i ask because I have only had black (dark) oil from the upper exhaust up until today


***EDIT AGAIN FOR RE-READING YOUR POST***

Thanks ondarvr... I see the "and" now. LoL

 

[clemsonfor]

Have you changed the type oil you have used? Did you just get this boat, or change how you have been operating it?

 

[WhiteRice]

Recently (4 weeks ago) got the boat from another owner. Not sure what oil he was using. I drained the fuel tank and started with fresh, synthetic.