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Old 30 April 2012, 07:34   #11
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You'd be surprised how much will come through a leaky bung. Don't forget it's under water and under pressure.
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Old 30 April 2012, 08:09   #12
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leaking Pro

A firend of mine has a 6 year old Pro that he bought used. Everytime he'd go out the hull would fill with water. It would take a good 25-30 mintues for the hull to drain out. Yesterday we tested the hull and found numerous leaks. The through transom drains were leaking between the body of the drain assembly and the transom. We also found a small hole in the hull deck joint that I could only guess has been there since it was built. We' re gonna seal these all up and retest .
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Old 30 April 2012, 11:57   #13
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Martin;

You do realize this is a 4 year old thread?

jky
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Old 30 April 2012, 12:09   #14
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I had the same issue with my 470 Pro II. After use removing the hull drain would result in lots of water coming out.

I found that there was no O-ring on the hull drain plug, so I replaced that.

I also noticed that the runner that attaches the tube to the hull did not go all the way to the aft end of the slot that holds the tube to the boat. About 6 inches of the slot was not used. This part of the slot is in the water when the boat is stopped or moving slowly.

I tried poking around in the slot with a piece of wire (couldn't see clearly into the slot), but I could not detect any openings into the hull. However, I filled this part of the tube slot with silicone sealant. No more water in the hull after using the boat. At worst there is one or two drips when the drain plug is opened.

The attached picture shows the slot and how the tube runner stops before the end of the slot.
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Old 30 April 2012, 15:41   #15
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I only get a few drops coming from my 420 after use in all types of sea condition.

However the friends 420 fills up to his feet with water but he simply needs a new drain bung which has given up.
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Old 30 April 2012, 16:57   #16
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Quote:
Originally Posted by Nos4r2
You'd be surprised how much will come through a leaky bung. Don't forget it's under water and under pressure.
We had a missing o ring on the bung and had quite a bit of water coming in. New o ring and problem gone.
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Old 06 May 2012, 16:58   #17
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New drain plug but still loads of water between the skins. when i get a spare couple of hours i will have to look under the tubes
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Old 08 August 2012, 17:26   #18
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pressure

i have pro 500 and have same problem, water in hull, done all sort of checks and can find no leaks. Somewhere i have heard its pressure that sucks water in around drain bung. How i do not know. I also heard that a brass bung may cure it. Any more thoughts?
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Old 09 August 2012, 02:34   #19
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I had a crack in the hull. it was along the runner where the tube slots in. iv had it repaired but still quite a bit of water in there. no idea whether the repair failed or where else it is coming from.
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Old 02 February 2013, 20:31   #20
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My Zodiac Pro 420 leaks too

I just got brand new tubes from Zodiac and installed on the 1987 hull. I took it out for the first time to see how she runs. We could see some water coming in from under the tubes when we were under way and also at the stern where the tubes hit the hull. I also have about 3 inches of non-used space in the running slot that the new tubes do not utilize. Guess I'll fill those portions in with Silkaflex or 3m 4200.

Also, I found areas in the bolt rope slot where the hull is pulling away from itself. Does anyone have a good way to fix this? 3M 4200 or 5200 as a temorary remedy? Glass it and sand it? Duct tape? It needs to be thin as any thickness will limit the installation of the tubes bolt rope slip on application.

And next is playing with the fuel pump......

Sean
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