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Old 20 June 2015, 15:48   #1
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Honda 15hp 4 stroke not pumping from tell tale

Initially I thought that I'd just not attached the muffs right or that being a one side water muff the impeller just wasn't getting the water all the way round, so I found a nice large bucket and dunked the whole leg. Still no tell tale..and then the warning buzzer started so I shut down the engine. Is there an easy place to start myself before I haul it off to an engineer. I've used a spanner before with varying degree's of success(!), any ideas ?
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Old 20 June 2015, 15:50   #2
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Old 20 June 2015, 15:58   #3
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Most likely there is a blockage or the impellor has died. It's history might tell you, but if you got it to alarm then I would think the impellor needs inspecting, and some thick fishing line or similar poking through as much of the tell tale as you can to free up any obstruction.
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Old 20 June 2015, 16:29   #4
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Thanks Poly - no sign of a blockage at the mouth of the tell tale, managed to slide a thin wire in a fairly long way. Off to the engineers tomorrow I think. Out of interest if I decided to drop the leg to inspect the engine would I need to fit new gaskets or would it all usually go back together water tight ?
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Old 20 June 2015, 16:32   #5
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I had a similar experience when I first put my outboard on muffs and then tried it in a bucket of water - no tell tail. After a few phone calls I was told to make sure the water level is way above the cav plate. Following the advice I bought a larger bucket and it was ok. Also bought some different muffs and pumps through ok.
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Old 20 June 2015, 16:45   #6
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I'll give that a try, the bucket waterline was below the cav plate.
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Old 20 June 2015, 16:52   #7
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BFs are pricks for the tell tale outlet blocking, There's a brass fitting which screws into the block which the TT pipe attaches to. Run it up on muffs and remove the fitting, have a dig around in the threaded hole with a bit of soft wire. Chances are you'll clear it.
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Old 20 June 2015, 17:01   #8
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Originally Posted by Mollers View Post
BFs are pricks for the tell tale outlet blocking, There's a brass fitting which screws into the block which the TT pipe attaches to. Run it up on muffs and remove the fitting, have a dig around in the threaded hole with a bit of soft wire. Chances are you'll clear it.
He got an alarm? I don't know where the sensor is but my guess would be alarm is more than just a blocked TT?
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Old 20 June 2015, 17:05   #9
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He got an alarm? I don't know where the sensor is but my guess would be alarm is more than just a blocked TT?
Ah, didn't read it properly. Best start with giving the impellor a good coat of 'looking at' then.
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Old 20 June 2015, 17:12   #10
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Yep - I just had another go with the bucket in case I'd just not tried hard enough. I can feel a slight warm air push coming through the tell tale, I think it could well be the impellor. It's off to the engineers next week. Thanks for the guidance everyone.
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