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Old 19 July 2006, 05:21   #31
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nasher, thanks very much for the offer. If I can't sort it soon, I will take you up on that!

I'll try and get a temp tonight at which the thermo opens, that'll give me a better idea of whats going on.

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Tim

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Old 19 July 2006, 08:26   #32
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Can you hold your hand under your hot tap for any length of time as that'll be roughly 60 Deg.

Looking at the diamgram Jizm showed earlier the tell tail is after the thermostat. If this was the case you'd only get water out of there after normal operating temp was reached. I'm sure mine has a Y piece some where that takes water from both the pump and block?

Tim, an investment in a new thermostat might be in order. Do they do different temp ranges like in cars (Winter and Summer)?
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Old 19 July 2006, 09:32   #33
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hi andy,

That diagram is not the same as my outboard I don't think. On mine, the water is pumped up to the thermostat where, it can either flow down the side of the block to the tell tail exit (when the thermostat is closed) or flow down there and down the end of the block around the plugs and then I assume out of the outlets at the bottom of the leg (when the thermostat is open)...hence why if I run it without a thermostat, excess water flows down the end of the block and out the bottom leaving only a small ish amount to flow down the side and out of the tell tail. This is all an assumption as I've only been able to look at the engine from the outside.

New thermostat is £32.50+VAT+carriage I'm going to double check mine with a thermometer before ordering. I'm not sure they do ones for different temps.

Cheers

Tim
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Old 19 July 2006, 11:04   #34
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Tim, andy
you're both right! That diagram is wrong for a typical outboard,didn't notice until you pointed it out. Water comes from the pump up the leg and has a T piece for the tell tale. When hot enough the stat opens letting hot water out of the motor beneath the cowl and allowing cool water in from the base of the leg.

Tim mine opens at about 60deg and the water is not too hot for me to stand (asbestos hands tho'). You really want to run the motor in a large bin as the motor can pump more water than a hose can supply. Does sound like your stat is duff tho'.
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Old 19 July 2006, 14:49   #35
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Ok, tested my 'stat tonight and she didn't open at just over 60deg, but did at about 80deg (not fully though I don't think). I will order a new one tomorrow and hope that that solves the problem!

Tim
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Old 19 September 2006, 06:48   #36
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Did the new stat solve the problem mate?
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Old 19 September 2006, 07:44   #37
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yeah i think so cheers ben. I've had the carbs cleaned out too and runs much better (although still often needs some throttle to start).
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