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Post by richardwhyley9364 on Sept 3, 2012 11:06:07 GMT
Can anyone help me with this? When sailing our sun fast 37 and we sail at steep angles we have noticed that after starting the engine, it will run without any water and overheat. We do not close the engine intake sea cock when sailing and I presume that the sea water cooling system drains due to the excessive heal. Does this happen to anyone else? thanks Richard  |
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Post by Zanshin on Sept 3, 2012 12:35:23 GMT
I wonder if perhaps your impeller is getting old, since even in a drained system it should immediately produce water.
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Post by davideso37 on Sept 4, 2012 10:38:49 GMT
I agree with Zanshin. Our SO37 has never had that problem. I used to change the impeller every year but as per the book but now leave it two years between changes. Also check that your inlet water strainer cover has the "o" ring intact and is not sucking in air and clean the strainer frequently as it does not take much debris to restrict the water flow.
Regards
David
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Post by sailby2 on Sept 5, 2012 12:05:09 GMT
Hello,
We've experienced the same symptoms. Bottom line fix is that whenever we're sailing long distance, or the conditions are rough, we close the seacock. If we don't, our experience is that heeling combined with wave action causes the raw water system to loose vacuum and leave the strainer dry. I talked to Jeanneau when we first bought the boat (2005) and they did not know of anyone else experiencing this problem. I checked on the forum and there is an owner with considerable offshore time who said their boat did the same thing. His diagnosis was that the strainer was mounted too high above the waterline. As mentioned in other posts, the strainer gasket could be the culprit but you'd lose water all the time if it were the problem. I've replaced water pumps/impellers numerous times and it does not make a difference. Frankly, it's been easier for us to just shut the seacock rather than try and re-engineer the system.
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