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Old 28-12-2015, 20:45   #16
So many boats, so little time.

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Location: Channel Islands Harbor, California, USA
Boat: FYC Club boats, 22 to 40.
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Re: Massive amount of exhaust fumes

[QUOTE=Sailmonkey;1999362]Show me a place to put a radiator for either a generator or a main engine on a Sailboat.......

Oops. Like said, slightly off topic. Was thinking of power boats, trawlers specifically.
On a sail boat? Maybe a use for that silly "sugar scoop"
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Old 28-12-2015, 20:48   #17
So many boats, so little time.

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Re: Massive amount of exhaust fumes

Because through hulls, corrosion of essential cooling components, clogging of same, and greater complexity overall. Murphy's Law applies here in spades.
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Old 09-01-2016, 02:55   #18
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Re: Massive amount of exhaust fumes

I'm heading down to the yacht next week.


Motor is Lister STW3
Fresh water cooled
Sea water only to cool exhast.

I am taking replacement impeller and Vetus LP45 water lock.
I will close the seacock when adding water to the strainer box, only opening the seacock AFTER the strainer is full and sealed.


Was fumes, not smoke
clean diesel from a trusted source - taken onboard few days before
Cannot reach exhaust outflow – yet never looked 'oily'.
I could feel with my hand “puffs” from around the Vetus LP45 waterlock, which is what makes me buy and take a new one.
If that does not fix the problem, then the issue will be the hose.

Question – is it posible to merely cut out and replace the cracked / split / holed portion of the hose?

If 'yes' then how? What sort of joiner fitting and / or procedure?

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Because they are obviously connected, I've added below my plan for dealing to the 'impellor' side of the issue:

I will check both the pump chamber and the face of the cover plate for scoring / pitting.
I will lightly sand both with fine wet sandpaper.

I have purchased 2 x new JAbsco impellors. I will install one and have a spare.

I have purchased a Vetus LP45 water lock and will remove and replace the one on board.

Inlet partially blocked by barnacles is definitely possible. She was left without bottom paint by the previous (*) for about 12 months and had HUGE growth when I took her out. I see one suggestion is to remover the hose and check the water flow. Another possiblility - dive over with a screwdriver & mask and poke around the inlet hole?

No 'white smoke' seen from exhaust.

I will check for air leak somewhere between the impeller and the strainer:
eg: the paper gasket on the seawater pump cover, hose clamps (especially above the waterline), and the seals on the seawater strainer (especially the cover to service the strainer basket).
Or , less commonly leaks inside the sea water pump, cracked pipe fittings, bad seal in the seawater pump shaft, and an intake hose that is internally collapsing.

I won't stop when I find the first problem as there well may be multiple items slightly askew adding to the issue.
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