Water under hull continues!!!!!

May 24, 2004
7,131
CC 30 South Florida
Like Yogi Berra said " I found it in the last place I looked". Water leaks have a way of originating at one place but just showing up at another with no traces of how they got there. If a tight tank plug stopped the leak, job done move on to next task.
 

Pam

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Jul 28, 2016
41
Macgregor 1993 26x Ky lake
The hatches in floor and under sink were leaking. Reseated them. Put boat back in water still leaking. Put coke into ballast tank and it was coming from there also. Changed plug on ballast and no more leaks! To boat out for first lesson. No leaks!
 
Oct 28, 2013
678
Hunter 20 Lake Monroe
For a second I thought you found a new use for coke then I scrolled down and saw your next post LOL

Sam
 
Aug 7, 2011
496
MacGregor 26S Lakeland, FL
I saw this post only after replying to the other thread about this problem... Glad you found your answer.
For those who were trying to help - on this boat, and I believe she has a 1993 26S not X, the keel pivot bolt cannot leak into the cabin, as it can on the non-water-ballasted boats. The keel bolt ends are fully contained within the ballast tank, and the two plates are the access ports that are used to reach them. This was used on late 91 models through the last of the 1995 production boats. So one thing to not worry about there.
The downside to that is that you have two 4" diameter open inspection holes on the top of a flat ballast tank which can leak if the inspection plates aren't sealed well. Other than that, the ballast tanks are VERY thick fiberglass on these boats, and that is another thing I wouldn't worry about at first. Kinda the last resort to look at.
Beyond that, the only factory holes open to the cabin are the vent and the fill valve, where the shaft sticks out the top. You found that the plug was leaking...excellent!

So Pam, I think we're all making the assumption that you know how to tighten the rubber plugs you use to stop up the vent hole under the stairs... Not at all condescending, do you know how to adjust them to get them tight enough, or as tight as you want them? They are easily adjustable.
 
Nov 19, 2011
1,489
MacGregor 26S Hampton, VA
Are we just sure the ballast valve itself isn't loose or rotted? This is going to be seen when the boat is out of the water. If that's tight, losing water from the ballast tank would result in a drop in water level in the ballast. If that valve leaks then you have a constant supply of water and any leak in the ballast will continue to be there.