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Old 07-31-2017, 06:37 PM   #11
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I mean the water in the bilge, is it salt or fresh and is it warm or cold.

If cold salt it's a leak, if warm salt it's a engine cooling system leak. If cold and fresh it a leak in the fresh water system.
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Old 07-31-2017, 09:34 PM   #12
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Both were replaced. The seal around the upper steering shaft was bad and the gimball housing was corroded. Engine was moved and the inner transom bracket was replaced as well. All new bellows.

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Did they inspect the transom for rot while doing the work? Some folks have had rot and the transom will flex under load and leak.
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Old 08-01-2017, 12:42 AM   #13
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They checked the transom it was solid. The cut out was sealed as well. The water is salt lukewarm temp. I haven't taken an actual temperature reading on it.

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Old 08-01-2017, 02:26 AM   #14
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They checked the transom it was solid. The cut out was sealed as well. The water is salt lukewarm temp. I haven't taken an actual temperature reading on it.

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Being salt says it's raw water and being lukewarm says it's at least after the power steering cooling and oil cooler is equipped but before the engine.
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Old 08-05-2017, 09:57 PM   #15
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This sounds like a bellows is due for replacement. As the rubber gets brittle, small cracks form and leak. I wouldn't wait long to pull the boat to trace this.
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Old 08-05-2017, 09:59 PM   #16
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Bellows are brand new just replaced and the problem was occurring last year before they were replaced. When the gimbal housing and interior transom bracket was replaced this spring we did all new didn't reuse anything.

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Old 08-07-2017, 05:46 AM   #17
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This sounds like a bellows is due for replacement. As the rubber gets brittle, small cracks form and leak. I wouldn't wait long to pull the boat to trace this.
Water coming in the bellows would be water temp. not warmed.Not the bellows.

You have a clamp leaking.. tighten them all.
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Old 09-03-2017, 12:31 AM   #18
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I have a 2400 SCR that had major leaking issues few years ago. Mercruiser Bravo 2. Turned out to be the small shift cable bellows. If it breaks it can cause leaking. It is difficult to find that kind of leak.
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Old 09-04-2017, 04:52 AM   #19
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Thank you. I have replaced the bellows this season and the leak started last year

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Old 09-19-2017, 02:17 AM   #20
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Thank you. I have replaced the bellows this season and the leak started last year

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I went out with the mechanic yesterday. Had 320 lbs of concrete and filled a cooler with water to replicate the weight I usually have on board. I ran it wide open with the mechanic in the bilge and we found the leak. The rub rail at the swim platform was separated from the hull. When I was going on plane the whole section was going under water and it is coming in the joint between the top and bottom halves of the hull which is usually covered by the rub rail. The mechanic couldn't believe how much water was pouring in. I attached a picture. Thank you for all your thoughts.

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