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Leaking Engine Coolant

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Wild View Drop Down
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Joined: 18 March 2010
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wild Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 09:42
Charlie
This is how I suggest to test IMO the fastest way to do it.
If there is a leak in the coil inside the waterheater(boiler) ,under pressure 
Fresh water will  pass by the leak inside the coil and finely come out the disconnected coil (heatexchanger) connection.

If there is a leak and the pressure of the fresh water system is higher than inside the Volvo cooling system Fresh water slowly coming in to the engine. With the engine running and hot ,the pressure inside the Volvo will become to high and the pressure safety valve on top op the engine wil open and fill up the expansion tank and the coolingwater will end in to the engine compartment by the overflow.
Just my thought 
Wild and Wet
Belgium
545e#268
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CharlieHCAN View Drop Down
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Joined: 28 January 2021
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CharlieHCAN Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2021 at 17:29
Wild thanks for the drawing and conformation - that's my thoughts as well - Ill let you guys know the results once I can get to the boat and find some time!! 

Appreciate all the brains working on this one ...this forum is a great place for running ideas past some salted sailors!!  

Charlie 
Charlie
2012 Hanse 470 - "Good Humour"
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JonB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2021 at 09:16
If there's leak with the coil inside the heat exchanger (clarifier), as the freshwater (non-engine) system is under pressure with the pump on, so if you remove the pipes that come from the engine to heat the water, then any crack in the coil will show in the form of a continual leak and the the water pump running to maintain pressure!


Jon B
470e
http://www.norse-king.blogspot.co.uk
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Bruno View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bruno Quote  Post ReplyReply Direct Link To This Post Posted: 30 November 2021 at 00:20
Charlie,

I discovered antifreeze under my engine and under the floor of the main cabin after a sailing weekend. The engine alarm was going on at low engine speed. After looking all over, I discovered that it was the overflow plastic tubing going to the overflow bottle that was disconnected...stupid as that.
Bruno

Hanse 400, 2010 Hull 660, sailing lake Champlain, VT USA
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