water in lower unit merc

[sry8631]

Pulled boat out for season,when changing gear oil noticed water mixed wih it. Not sure how to go about finding the problem,or where to start. Replaced the oil fill and oil vent seal they were shot. Thought that may be the problem. Hooked muffs up ran it for short time drained it again,still water mixed in. Also alot of black film coming out of discharged water from drive. Changed shift cable earlier this year noticed every seal + bellow had some kind of silicone of some kind on them. Cleaned all it off before replacing seals. Any help would be very kind. Trying to fix myself funds are low wife says have to sell boat if it cost us to much to fix, which would destroy me. Work out of town, no chance to get to computer much sorry if there is not a quick response from me. Thanks

 

[Alpheus]

Re: water in lower unit merc

You need to remove the outdrive drain the oil and perform a pressure test. Once you get the air pressure to 15 psi spray the outdrive with soapy water and look for bubbles. If you dont find any, start turning the drive shaft while in gear and look for bubbles. It should hold 15 psi over night...

Read This:

http://forums.iboats.com/showthread.php?p=1573303#post1573303

 

[sry8631]

Re: water in lower unit merc

Thanks for the reply. Now I have an idea on where to start. I will build the pressure pump soon as possible. Thanks once more, new at boating and so far the boat has been trouble,But also lots of fun.

 

[sry8631]

Re: water in lower unit merc

Have not had time to work on lower unit yet. But I have a quick question, keep in mind I am new at boating incase its a stupid question. Here ,is water suppose to come out of the same place the exhuast comes out through the propeller? I noticed on youtube it doesnt on most, but it does on mine. Thought about it today on way back from work.

 

[NHGuy]

Re: water in lower unit merc

Yup, water & exhaust come out the prop center hub.

 

[NHGuy]

Re: water in lower unit merc

Also, you better winterize your engine & drive before you get a hard freeze.

 

[sry8631]

Re: water in lower unit merc

Engine already for winter? Lower unit gear lube drained.Not sure if I should put lube back in it untill I get time to work on it could be a while, or if it will be fine empty till I get time. What you think.