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Old 01 August 2014, 10:41   #21
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Peter, are you 100% sure that this engine should have a continuous flow of tell tail water ? I was led to believe the thermostat opened and closed when needed.

The starter motor does not turn at all, no noise, nothing. I'll hammer it and see if it turns, if not i'll check the ground wire
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Old 01 August 2014, 12:06   #22
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Quote:
Originally Posted by HighlandR View Post
Peter, are you 100% sure that this engine should have a continuous flow of tell tail water ? I was led to believe the thermostat opened and closed when needed.

The starter motor does not turn at all, no noise, nothing. I'll hammer it and see if it turns, if not i'll check the ground wire
The tell tale is there to let you know that the impeller is pumping water. It should always be flowing water as long as the engine is running. It is very common that they plug. As in really really common to plug. You can blow it out with air, or try a piece of wire or something shoved into the hole.

Without water flowing from the tell tale doesn't mean it is going to hurt anything, it is there only to let you know the motor is properly pumping water. To me it is important to be able to look back and see my motor is pumping water. There have been a couple of times, kelp has wrapped around the lower leg and blocked water flow.

As to the starter you probably should try manually turning it a little bit to free it up and break any corrosion built up on the brushes.
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Old 01 August 2014, 13:11   #23
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Thermostat, as far as I know is only closed when first starting from cold, so "as needed" is kind of misleading.

My Honda 40 was prone to plugging the telltale; I used a high pressure water jet on the outlet to clear it (actually got in the habit of hitting it every time I flushed the motor.)

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Old 02 August 2014, 07:37   #24
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Hi guys, just started the engine again from cold and it pumped water from the outlet for a few seconds then stopped - which it wouldn't do if it was blocked with dirt ?

Can anyone confirm if this is normal for this model of engine to have the tell tail water stop and start ? as I don't want to risk damage to the engine
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Old 02 August 2014, 12:14   #25
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Are you running in the water? In a tank? or on a hose with muffs? (Or some other way)?

Pretty common for a hose to supply insufficient pressure to completely fill the water need, so you may not get a telltale.

If you've got the LU submerged, you should have at least some telltale stream at all times (weaker at idle, stronger when throttled up.)

I've never heard of an OB that shut off cooling water at any time (well, not one that continued running, anyway.)

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Old 02 August 2014, 12:25   #26
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Hi Jky, it's in a tank with the leg submerged, the intake is at least 12 inch depth
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Old 02 August 2014, 12:27   #27
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My experience is a bit limited but on my 2005 Mercury 15 two stroke I was warned to expect an intermittent flow due to the thermostat but strangely on my new Tohatsu 20 (4 stroke) and my 90's 135 Mariner the stream seems constant !!!

Have you had the thermostat out ? I replaced both mine on the 135 as one was not opening at all & the flow was brilliant after that.
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Old 02 August 2014, 12:41   #28
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Paddlers, how often did the flow start and stop ? from cold start it flows for a few seconds then stops, it has ran around 2 mins with no further flow, so i switched off !
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Old 02 August 2014, 14:29   #29
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I'd have a poke around. Strimmer cord is good to poke up the outlet. I'd whip the thermostat out personally just for peace of mind!
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Old 02 August 2014, 15:36   #30
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Have owned a Yamaha 5hp and water always came out of the tell-tail.
Odd time had to put wire up to clear it and then it was fine.
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