View Full Version : water in transmission

03-11-2008, 05:05 PM
hey guys. any advice on what to do about water in the transmission on MC?? trans fluis is al thick and milky!! please advise!!

03-11-2008, 05:06 PM
find the leak, fix it, and flush the tranny. :D

03-11-2008, 05:07 PM
Drain and refill with new. After that run a few minutes and check the fluid. If it still looks to be milky repeat the process. This may take 3, 4, 5 or more times before you get clean fluid. You also need to find the source of the water intrusion.

03-11-2008, 05:09 PM
thanks for ur advice guys. it will not shift into gear. any ideas??

03-11-2008, 05:19 PM
I remember a thread like this somewhere on here, but I can't find it. It was something to do with the plate stuck together.

03-11-2008, 05:22 PM
V-drive or DD? What model? What year?

03-11-2008, 05:24 PM
V-drive or DD? What model? What year?

DD, I think a '97 or '98 PS205

03-11-2008, 05:28 PM
dd 83 s&s.......

03-11-2008, 05:30 PM
Raise up the motor box, then park a NEW boat under it! problem fixed!:D

03-11-2008, 06:10 PM
ditto on finding the source of water intrusion. front seal, rear seal, or trans oil cooler. Could also be from misalignment of shaft causing rear seal to fail. It's pretty hard to get all the waterized fluid out especially from behind the front piston. anytime water gets in there ideally the tranny should be torn down and cleaned. Also depends on how long it's been run with water in it.

88 PS190
03-11-2008, 06:23 PM
Most likely going to be the trans oil cooler. Any radiator repair shop should be capable of pressure checking and repairing any leaks.

03-11-2008, 06:31 PM
My water problem in my tranny was the tranny shaft seal. I quess water tends to "spin" up the shaft into the tranny> Dealer told me "to keep bilge dry"...Yea right!

03-11-2008, 07:02 PM
I'm in the middle of a trans rebuild right now myself


1 hour apart, mine was good


03-12-2011, 12:13 AM
i tested mine and just hooked it up to an air compressor and submerged it in water. i see you held your for an hour. should i have held mine longer??? i didnt see any bubbles and said thats that. do you think i did it right?