Where is this water coming from?

woodguy81

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Got her started. What have I got here?
 

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woodguy81

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Coming out of the top cover. New upper unit. Just installed. Good flow through the motor but there’s water coming out of that top cover.
 

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woodguy81

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the jokester in me would say "built in drive shower"
the mechanic in me says.....oooh, thats going to cost you
Pulled the top cover and there doesn’t appear to be any water in the drive oil. Guess I’m pulling it off tomorrow and checking it out. I’ll call sei as well. This is fresh out of the box so I’m hoping I did something dumb and can fix it myself
 

Scott06

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O ring in water passage on left hand side of drive , maybe water is coming up the gaskets flange between bell housing and drive and presenting there? Its either that or a cracked drive housing water shouldn’t be up in that area of the drive. No fault warranty they should replace
 

woodguy81

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I pulled the drive back already to be sure the o ring was still in place. That’s all good. If you are referring to #16 in the diagram that is in place but possibly leaking from there? This is a new unit from sei with 0 hours on it so hopefully it’s not going to need to be sent back. Does water flow behind that plug in the diagram?
 

Bt Doctur

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there is water there from the machining process, merc does it a little different. I would remove the cap and add some sealant around #16
 

woodguy81

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So I found another post on here from 2017 with the same problem and the fix was to pull the top cap and seal with FTv seal and around the hole with the plug in it. Someone also suggested removing the plug before sealing it all up. Does this sound like a good solution?
 

Rick Stephens

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WHOA.

There is a cooling water passageway there. Has absolutely nothing to do with the oring that holds in oil and out water. If the rubber fits loose, it leaks - until one day it doesn't. They seem to stop on their own. There is no reason to do anything at all about it. Certainly not adding sillycone.
 

woodguy81

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WHOA.

There is a cooling water passageway there. Has absolutely nothing to do with the oring that holds in oil and out water. If the rubber fits loose, it leaks - until one day it doesn't. They seem to stop on their own. There is no reason to do anything at all about it. Certainly not adding sillycone.
I was advised to add some rtv sealant around the rubber stopper edge and reinstall the top cap By the tech guy at sei. Looks like it should be good to go. Thanks.
 

Scott06

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Doesnt say much for SEI quality i would figure they pressure test both oil and water passages before they ship
 

Rick Stephens

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Doesnt say much for SEI quality i would figure they pressure test both oil and water passages before they ship
That water passage has no o-ring or seal, just the rubber dam. What does it hurt if it seeps water out? And my Mercruiser Gen 2 did it for the first week after I rebuilt the drive. Not the first one I have seen do that.

I don't think anyone would pressure test an open cooling system in the drive. To prove what?
 

Scott06

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That water passage has no o-ring or seal, just the rubber dam. What does it hurt if it seeps water out? And my Mercruiser Gen 2 did it for the first week after I rebuilt the drive. Not the first one I have seen do that.

I don't think anyone would pressure test an open cooling system in the drive. To prove what?
To prove it doesnt leak. bottom line water isnt supposed to leak there, no it isnt going to be an issue if it weeps, what if it gets worse and diverts wster meant to for cooiling.
not trying to make more out of this than its worth, but biggest issue is you have a new part that the customer has to repair or mess with vs bolting it on and go.
 

Stinnett21

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Mine did the same thing after pulling the cap to check my top bearing. Put some sealer around the rubber plug, re-assemble, done. In my thread achris recommended the sealer. I used black RTV as I remember he said to use. Maybe its overkill as Rick says but it is water not getting to where it's supposed to go.
 
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