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Old 02 August 2007, 10:16   #1
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A lesson learn't

While doing my first night navigation in poole harbour my Buzzer/Alarm went off, with a plume of smoke coming from the engine.

Luckly i managed to get a tow back, next day i checking the water intake & the tube between the engine block and telltale, i put it back in the water. Started first time (so no major damage then) but next to NO water from the telltale, must have a damaged impellor.

I sourced after 2 hrs a new impellor and took the gearbox off (all done next to the slip in poole) impellor was not damaged so i put it back in the water. Again only a dribble ???????

Eventually i removed the small plastic part of the telltale the water shoots from fixed to the top cowel, gave one quick blow and a a load of s**t came out.

PROBLEM SOLVED, please dont make the same mistake, leason learnt could of saved myself a lot of grief & time

had a great 5 hrs on the water after that though & engines perfect.
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Old 02 August 2007, 11:22   #2
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Was it just the telltale tube that was clogged? As far as I know, that won't cause an overheat condition.

The telltale is just a "leak" in the cooling water flow, usually after the circulation through the engine, that is supposed to warn you that there is no water flow. A clogged telltale does not mean water is not circulating, just that you have no external indication of pressure.

Hopefully you have resolved your problem, but I doubt the clogged nozzle had anything to do with it.

jky
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Old 02 August 2007, 11:44   #3
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what you say makes sence, but if the tube was blocked the way it was would that not restrict the flow of water enoth through the engine causing the temperature increase.

Hopefully there is no more grit still in the block some where.
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Old 02 August 2007, 11:50   #4
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Quote:
Originally Posted by ian mcconnell View Post
, but if the tube was blocked the way it was would that not restrict the flow of water enoth through the engine causing the temperature increase.
Less than 5% of the water going through comes out the tell tale, so unlikely the temp would change more than 5% ....
Could be when you took the toob off you dislodged something more significant else where?
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Old 02 August 2007, 11:56   #5
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i guess if its all ok in the 5hrs i used it for afterwards, impellor was undamaged . all is OK

I must have picked to a plastic bag or somethink

CAN ANY ONE THINK OF ANYTHINK ELSE I COULD CHECK!!
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Old 02 August 2007, 16:23   #6
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If you want to be doubly sure, then whip off the thermostat or an anode from the waterway and check there is no crud behind. Other option is to connect a flush hose to it and check water comes out the exhaust/gearcase.
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