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Old 31 August 2023, 17:27   #1
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Water from around prop when flushing

Being a diligent type, I always run my engine for 5 minutes in a large tub of water when I get home from having used it, whether it be fresh water or salt. So, until today, I had never even tried using the flushing port. But I had only spent 90 minutes on the very clean-looking Severn, so I decided to do that rather than use the tub.

I know that water comes from different orifices, not just the pee hole, but I was surprised by how much water was coming from around the prop. I know the exhaust comes out from somewhere around there, but is it normal to have quite as much water emanating from it as shown in the picture?

It's a Suzuki DF20A, EFI, 2020 model. Almost always starts on first pull - if not on the second pull, so I have had no concerns about it so far.Click image for larger version

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Old 31 August 2023, 17:38   #2
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Quote:
Originally Posted by Trello View Post
Being a diligent type, I always run my engine for 5 minutes in a large tub of water when I get home from having used it, whether it be fresh water or salt. So, until today, I had never even tried using the flushing port. But I had only spent 90 minutes on the very clean-looking Severn, so I decided to do that rather than use the tub.

I know that water comes from different orifices, not just the pee hole, but I was surprised by how much water was coming from around the prop. I know the exhaust comes out from somewhere around there, but is it normal to have quite as much water emanating from it as shown in the picture?

It's a Suzuki DF20A, EFI, 2020 model. Almost always starts on first pull - if not on the second pull, so I have had no concerns about it so far.Attachment 143495


Looks normal to me
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Old 31 August 2023, 17:50   #3
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I’d be more concerned at the state of that prop! [emoji51]
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Old 31 August 2023, 17:57   #4
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I’d be more concerned at the state of that prop! [emoji51]
Ahem. Yes - I did have an argument with a slipway [emoji57].
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Old 31 August 2023, 19:07   #5
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Most of the water goes through the prop some through the top of the leg rest through the tell tail you don’t see much through the prop because of the exhaust top of the leg is exhaust for balance and water sometimes you see a bit of steam there two tell tail more a proof of water being pumped effectively.
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Old 31 August 2023, 20:24   #6
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Well, some of the big guns (Jeff Stevens, Chipko and PD) say it's normal, so I'll not worry about it.

Chipko did note that I'd taken a chunk out of the prop, when I mistook the depth of a slip today.

This is a picture of it in all its glory. Is this the end of the prop, or can it still be used as it is, or repaired in some way?Click image for larger version

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Old 31 August 2023, 20:30   #7
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Quote:
Originally Posted by Trello View Post
Well, some of the big guns (Jeff Stevens, Chipko and PD) say it's normal, so I'll not worry about it.

Chipko did note that I'd taken a chunk out of the prop, when I mistook the depth of a slip today.

This is a picture of it in all its glory. Is this the end of the prop, or can it still be used as it is, or repaired in some way?Attachment 143496


It can be repaired by the likes of Steel Developments, but it’ll probably be cheaper to buy a new prop.
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Old 31 August 2023, 20:45   #8
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And what if I just continue to use it as it is? Poor traction? Cavitation? Will it affect the engine?
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Old 31 August 2023, 21:13   #9
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Quote:
Originally Posted by Trello View Post
Being a diligent type, I always run my engine for 5 minutes in a large tub of water when I get home from having used it, whether it be fresh water or salt. So, until today, I had never even tried using the flushing port. But I had only spent 90 minutes on the very clean-looking Severn, so I decided to do that rather than use the tub.

I know that water comes from different orifices, not just the pee hole, but I was surprised by how much water was coming from around the prop. I know the exhaust comes out from somewhere around there, but is it normal to have quite as much water emanating from it as shown in the picture?

It's a Suzuki DF20A, EFI, 2020 model. Almost always starts on first pull - if not on the second pull, so I have had no concerns about it so far.Attachment 143495
sorry if i misunderstand but you do know you are not supposed to run the engine on a hozelock connection flush port ?,just flush static ,if its running on muffs,or not running at all , then sorry i will crawl back under my rock !
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Old 31 August 2023, 21:22   #10
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Thanks, Orwell Boy, for the reminder. But on this occasion, when I was flushing through the hose connection port, I had the engine off.

On those occasions when I've run the engine, it's always been with the leg in a tub of water.
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Old 31 August 2023, 21:46   #11
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Quote:
Originally Posted by Trello View Post
Thanks, Orwell Boy, for the reminder. But on this occasion, when I was flushing through the hose connection port, I had the engine off.

On those occasions when I've run the engine, it's always been with the leg in a tub of water.
Thanks trello ,it was a general reminder to all ,as its not the most common understood scenario and not always made clear
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Old 31 August 2023, 21:47   #12
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Quote:
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And what if I just continue to use it as it is? Poor traction? Cavitation? Will it affect the engine?


All depends how bad it is. Chances are you’ll get excessive vibration due to it being un-balanced, performance will suffer, if you’ve bust the hub, it may slip. Hopefully you haven’t damaged the gearbox or shaft. You can pick up an after market replacement for around £50, so not worth taking the risk tbh.
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Old 31 August 2023, 23:18   #13
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And what if I just continue to use it as it is? Poor traction? Cavitation? Will it affect the engine?
Judging by the look of it, the prop itself will perform pretty much the same but as Dave said, it's the imbalance you'd need to be more concerned about. You may find it starts to wobble/vibrate. Just throw a new one on and save yourself the headache.
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Old 02 September 2023, 06:33   #14
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Go to eBay or Specialist small craft you will get a nice new prop for that engine with hub kit for about £115 delivered

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Old 02 September 2023, 06:52   #15
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https://ssimarine.co.uk/collections/suzuki

I use these had no problems thus far
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Old 02 September 2023, 08:42   #16
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https://ssimarine.co.uk/collections/suzuki

I use these had no problems thus far


Yup, I’m running one of theirs too. Can’t tell any difference from the OEM one tbh.
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Old 02 September 2023, 15:36   #17
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Is this the end of the prop, or can it still be used as it is, or repaired in some way?Attachment 143496
give Castle Marine in Caernarfon a call, top guys for prop repairs

https://castlemarine.co.uk/
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Old 03 September 2023, 11:43   #18
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Thanks for all the advice, chaps.

I know little about propellers, so I'm going to do my "due diligence" and inform myself, and then get a replacement before I take the boat out again.
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Old 03 September 2023, 13:12   #19
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As PD says way up thread...

Polastorm have gone up a bit in price I see since I last bought one a couple of years ago. Perhaps £75 or so for a 15/20hp. SSI are better at £45ish.

Castle Marine are brilliant for refurbing big or specialist stuff but in truth by the time you've paid to send it there, their repair and their return cost then new from SSI will be lots cheaper on the average portable OB.
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