Tell tale not working while flushing

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Reiner
Posts: 192
Joined: Tue Mar 25, 2014 11:46 pm
Location: San Diego

Tell tale not working while flushing

#1 Post by Reiner » Tue Jul 09, 2019 3:30 pm

I have a 2015 Mercury 150 HP OB Motor and noticed while flushing that no water is coming from the tell tale. It is just dripping a bit. I checked for any obstruction but could not find anything. There was also no overheating recorded while on the water based on my Mercury Vessel View module. Could it be that my thermostat got stuck and this is the cause? I read various answers on the web that that maybe possible. I have a new one on order and will see if this fixes the problem but curious if someone experienced the same. Thermostat was not replaced since I have the toon and I operate mostly in salt.

Thank you,
Reiner
2015 Lowe SS 210 RFL XL Package 150 HP Merc
"The Nina" or "The Bismarck" my buddy's call it!
2011 Tundra

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bansil
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Re: Tell tale not working while flushing

#2 Post by bansil » Tue Jul 09, 2019 6:54 pm

The couple i have, and have seen don't pee (all 2 strokes) i was told years ago it was a pressure/suck issue...oh!....oh!.... @lindalovelace. I kid, I kid......kinda :P
What does she do in water? I got a couple plastic barrels and use them now, they all flush in tubs, not on muffs
Check out "Dudes" site www.whereisdude.com

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TWB
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Re: Tell tale not working while flushing

#3 Post by TWB » Wed Jul 10, 2019 5:27 am

My 75HP Mercury pees fully while flushing on muffs. I know you've checked it - but - I was concerned once because the rate seemed slack - found that my muffs weren't well-seated.

:2cents

-Paul
Paul & Michele
2003 Landau DX 24' Cruise "Loretta Jane"
2003 Mercury 75hp
My Rebuild: http://pontoonforums.com/viewtopic.php?f=16&t=26135

"Don't waste brain cells over something you can do nothing about." --My Wife

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Reiner
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Re: Tell tale not working while flushing

#4 Post by Reiner » Wed Jul 10, 2019 10:47 am

I'm not sure what will happen in the water. I checked couple times during the day on the water but not before turning it off at the end. If the new thermostat will not fix it I'll drop it in the water on the trailer and see. I do not have muffs since I don't use them for flushing, just the integrated hose connection.
2015 Lowe SS 210 RFL XL Package 150 HP Merc
"The Nina" or "The Bismarck" my buddy's call it!
2011 Tundra

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TWB
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Re: Tell tale not working while flushing

#5 Post by TWB » Wed Jul 10, 2019 2:37 pm

Reiner wrote:
Wed Jul 10, 2019 10:47 am

I do not have muffs since I don't use them for flushing, just the integrated hose connection.
That’s gonna be the reason. Someone more knowledgeable than I will be able to confirm, but I seem to remember reading that the hose connection flush does not create peeing.
I will see if I can find where I read that.

-Paul
Paul & Michele
2003 Landau DX 24' Cruise "Loretta Jane"
2003 Mercury 75hp
My Rebuild: http://pontoonforums.com/viewtopic.php?f=16&t=26135

"Don't waste brain cells over something you can do nothing about." --My Wife

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TWB
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Re: Tell tale not working while flushing

#6 Post by TWB » Wed Jul 10, 2019 2:54 pm

Though this is not article I originally read, this has good info...such as don’t run the motor when using the hose connection.

https://www.boatingworld.com/engines/fl ... -the-book/

I hope this helps.

-Paul
Paul & Michele
2003 Landau DX 24' Cruise "Loretta Jane"
2003 Mercury 75hp
My Rebuild: http://pontoonforums.com/viewtopic.php?f=16&t=26135

"Don't waste brain cells over something you can do nothing about." --My Wife

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Reiner
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Location: San Diego

Re: Tell tale not working while flushing

#7 Post by Reiner » Wed Jul 10, 2019 4:20 pm

Water always came out of the telltale while flushing except the last time. But I also found on the Mercury Parts Diagram website that there is a strainer on top of the motor the telltale hose is connected. I need to check that as well.
Thanks, for all replies!
BTW, here is the website: https://www.mercurymarine.com/en/us/par ... ts-catalog
2015 Lowe SS 210 RFL XL Package 150 HP Merc
"The Nina" or "The Bismarck" my buddy's call it!
2011 Tundra

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Liquid Asset
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Re: Tell tale not working while flushing

#8 Post by Liquid Asset » Wed Jul 10, 2019 6:40 pm

Pick up a set of muffs, they are cheap. I just ran my new verado on mine for the first time last Sunday. (Changed the fuel filter and wanted to make sure it was primed) . Anyway once I shut it down my water pressure from the well was still letting water through the pee hole.

All my old 2 strokes would let water out once the hose was turned on. . Curious how the impeller is lubed with the flush hook up? Is that just for rinsing the motor of say " salt water" or for running it? Probably fine just curious as I've always used muffs.

When was the impeller last replaced?
2018 Tahoe ltz elite windshield powered by a 175 Mercury verado with sea legs
Rebuilt custom 20' 1983 riviera cruiser tritoon SOLD

2017 crew cab F-350 gets me to the lake !

riplipper
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Re: Tell tale not working while flushing

#9 Post by riplipper » Wed Jul 10, 2019 7:11 pm

my 200 merc pees while trimmed down but not trimmed up? when connected to the hose?? Cannot tell you why.
I have never tried turning up the water pressure too much, kind of afraid of doing that.
I am the guy at the boat ramp that gives you dirty looks when you are a complete idiot and too stupid to know it.

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Reiner
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Location: San Diego

Re: Tell tale not working while flushing

#10 Post by Reiner » Fri Jul 12, 2019 9:33 am

Problem fixed, replaced the Thermostat last night and everything is working as it should.
Thanks for all responses.
2015 Lowe SS 210 RFL XL Package 150 HP Merc
"The Nina" or "The Bismarck" my buddy's call it!
2011 Tundra

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