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Old 02-09-2013, 08:00   #31
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Re: A Mystery Leak / looking for ideas

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Originally Posted by Paul Lefebvre View Post
I would check the water pump">raw water pump on the engine to see if the seals are leaking while motoring.

Good luck
Good suggestion.

Nobody's mentioned the vacuum break on the raw water intake. A little bit of crud in its valve and it will drip or dribble water while the engine is operating.
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Old 02-09-2013, 08:36   #32
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Re: A Mystery Leak / looking for ideas

Have a close look at the waterlift muffler. I had a tiny pinhole in one and it would leak down slowly after the motor was shut down. It cout be on the bottom where it si not easily seen. I found mine by following a dirty streak of moisture around the back side.
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Old 02-09-2013, 08:49   #33
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Re: A Mystery Leak / looking for ideas

These have been mentioned before, but I've had two different leaks that only occured when underway:

* Rudder shaft packing gland. This only leaked when we were sailing at a good clip. Normally the static waterline is below the gland, but when we are moving the stern wave is high enough to get through the leaking gland. I re-packed it, problem solved.

* Engine exhaust hose had a hole, which let cooling water from the exhaust system drain into the bilge. This obviously only leaked when the engine was running. Fortunately, the leak was where I could see it (I was looking for something else when I saw the water dribbling out of the hose). I patched the leak with silicone "Rescue Tape", and later replaced the entire exhaust hose.
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Old 02-09-2013, 10:01   #34
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Re: A Mystery Leak / looking for ideas

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At boat now. Now have a considerable leak at the stern tube-cutlass bearing-rubber hose-packing gland area. A friend (with many more years experience than myself) coming down to take a look in a few minutes. Ughhhhhh
Could be a good thing... maybe it just needs tightening!
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Old 22-09-2013, 18:21   #35
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PlumBob,
How did this turn out? The suspense is killing me..
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