armchairsailor
Well-Known Member
If the engine note goes noisy and a steady stream of water comes out of the exhaust (tap left quarter on sort of thing), is that of concern? My thought is the exhaust has come loose or something.
TIA
TIA
Odd exhaust note, excessive water
- Thread starter armchairsailor
- Start date
armchairsailor
Well-Known Member
Sorry, Y2M15 - old yanmar.
lpdsn
Well-Known Member
Out of the exhaust into the sea? Or out of the exhaust into the boat?
macd
Well-Known Member
If the former, the change of note suggest something inside the exhaust system. The OP doesn't describe the layout, but I'd imagine the water-trap (if fitted) would be favourite. If it's plastic/GRP, could the exhaust have run without water recently? If steel, perhaps something's corroded or become misplaced.
P.S. If there is a fault of this sort, it may mean the water trap no longer operates as a water trap. If there's a drain on it, it would be prudent to open it after stopping the engine. (And closing it, obviously, before running the engine again.)
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RichardS
N/A
Indeed. If the water flow has stopped pulsing it can only be because it is flowing continuously into the water trap, as you would expect, but then flowing continuously out. I can only think that the dip tube part of the muffler outlet has broken off and the trap is now full of water which just flows in and out.
Richard
armchairsailor
Well-Known Member
Turns out an elbow has parted company. Great start to the family holiday! Sigh...
RichardS
N/A
Out of interest, what has actually parted company? I'm struggling to understand how anything that happens to the elbow can result in a continuous flow of cooling water from the exhaust, rather than a pulsed flow.
Richard
armchairsailor
Well-Known Member
The elbow casting broke in two, just below where the water is introduced, therefore half the water went to the bilge, and half to the exhaust. Since the exhaust gas wasn’t pushing the water through, no pulsing ensued.
Big shout to Gartside Marine in Sidney for getting me fixed up.
Big shout to Gartside Marine in Sidney for getting me fixed up.
macd
Well-Known Member
I'm surprised "a steady stream" of water came out of the exhaust at all. (Assuming you mean the rearward end where it's supposed to discharge.) Is there a swan-neck?
Wasn't the interior of the boat kind of smelly when the engine was running?
RichardS
N/A
Indeed. I said "I'm struggling to understand how anything that happens to the elbow can result in a continuous flow of cooling water from the exhaust" and I'm non the wiser.
Richard
macd
Well-Known Member
Given the puacity of information provided, armchair, may I offer you this indispensible guide to engineering self-sufficiency 
Heckler
Well-Known Member
Given the puacity of information provided, armchair, may I offer you this indispensible guide to engineering self-sufficiency
View attachment 72799
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