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Post by seasunofthesoul on Mar 6, 2021 12:04:48 GMT -5
I have noticed that the waste tank level monitor is showing the tank getting more contents (filling up) than it should. This is happening when we aren't using the boat so i have to think maybe rain water is getting into the tank. I'll check the vent opening but any other ideas? Could there be a compromise on the throughhull of the discharge such that enough pressure is pushing in far enough to add seawater to the tank? Any other ideas?
Thanks in advance!
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Post by hawker63 on Mar 7, 2021 8:10:01 GMT -5
On our 2007, 4460, we don’t have a macerator , so for us, there is on,y the opening to drain the tank and the 2 toilets (I never thought of the vent). We disconnect all water when we leave the boat. If water supply is still connected or if fresh water pump is on, I’d check the toilet valves to see if either is bypassing. The cap to empty the tank is possible, but the angle would make it tough for rainwater to get in. Ours seals pretty good. I am not sure where else water could get in. I wonder if your level is not free floating and maybe when you leave, the tank is fuller than you thought and while you’re gone, the float is slowly finding its actual position. Maybe something obstructing the level detector?
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Post by tc33obx on Mar 7, 2021 12:49:39 GMT -5
Seasun,
Hawkers suggestions are very good to check. Do you have a Maserator on your boat and is the seacock for that closed. I did have a macerator on my boat and the seacock was just forward of the starboard engine on the bottom of the hull.
My first question is do you disconnect the water line or at least turn off the water pump when leaving the boat. I would think there would only be 4 areas for that water to get into the tank if you don't have a macerator and overboard flush. That being the 2 toilets, the vent tube and the drain tube. The toilets would contribute only if in some way your water is staying on either connected to the dock supply or the water pump and only if one of the toilets has a leaking seal and also a broken vacuflush that keeps water flowing to the bowl. That is a lot to go wrong at one time. Pump or dock water on, seal leaking in a toilet and water constantly flowing to that toilet for some reason (maybe the foot switch is stuck down)? I doubt that is the problem.
The other two are possibilities are limited due to the positioning of the drain access (on side hull) and vent tube, on side hull as well. My only other thought would be how close is your vent to the water and at your dock do you ever get continuous wave action coming at the port side of your boat where that vent is located. I"m thinking enough wave action there and water is being splashed into the vent tube. But even that is strange since the line actually runs up from the vent. At least it did on my boat to the holding tank filter which I would think would stop any water even if it found a way to run up that line.
Definitely a strange issue. I think Maserator Overboard flush leaking or the gauge is simply wrong, or probably a low probability that someone is using your boat when you are away.
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Post by seasunofthesoul on Mar 7, 2021 14:50:19 GMT -5
Thanks all . I keep the water turned off when gone and we are not connected to shore water. When i pumped out, i stopped drawing anything for a bit of time and the guage showed empty so i feel confident my starting point was accurate. Then returning to the boat, it was like 1/4 full with no use. I have a security camera inside so no unexpected use. I'm going to have the thru hulls all replaced soon and see how that affects things.
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Post by goldenarch on Mar 11, 2021 9:13:19 GMT -5
Hey Guys,
I have an 06 4460 with macerator. My best guess would be the toilets are leaking back to the tank when you are gone. Are seals on the toilets tight/ When you return to the boat after an absence, is there water left in the toilet bowls? If not then that is the problem and fix is easy...replace the seals.
Good luck!
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Post by jtown1973 on Mar 11, 2021 16:14:46 GMT -5
It might just be your gauge is off or some TP on the sensor in your tank. Unless you've visually checked your tank, you may not be gaining fluid at all. If you can't put eyes on the tank or the gauge keeps going up, then you might be getting fluid in somewhere, but it's limited where it can get into the holding tank. It could only come from the toilets, vent, waste pumpout outlet, or seacock for overboard discharge. There isn't really any other way fluid can get in or out.
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Post by gofast24 on Mar 12, 2021 12:24:12 GMT -5
Seasun, Hawkers suggestions are very good to check. Do you have a Maserator on your boat and is the seacock for that closed. I did have a macerator on my boat and the seacock was just forward of the starboard engine on the bottom of the hull. My first question is do you disconnect the water line or at least turn off the water pump when leaving the boat. I would think there would only be 4 areas for that water to get into the tank if you don't have a macerator and overboard flush. That being the 2 toilets, the vent tube and the drain tube. The toilets would contribute only if in some way your water is staying on either connected to the dock supply or the water pump and only if one of the toilets has a leaking seal and also a broken vacuflush that keeps water flowing to the bowl. That is a lot to go wrong at one time. Pump or dock water on, seal leaking in a toilet and water constantly flowing to that toilet for some reason (maybe the foot switch is stuck down)? I doubt that is the problem. The other two are possibilities are limited due to the positioning of the drain access (on side hull) and vent tube, on side hull as well. My only other thought would be how close is your vent to the water and at your dock do you ever get continuous wave action coming at the port side of your boat where that vent is located. I"m thinking enough wave action there and water is being splashed into the vent tube. But even that is strange since the line actually runs up from the vent. At least it did on my boat to the holding tank filter which I would think would stop any water even if it found a way to run up that line. Definitely a strange issue. I think Maserator Overboard flush leaking or the gauge is simply wrong, or probably a low probability that someone is using your boat when you are away. Agree with TC, highly improbable that the water is getting in from tank vent as it should be running up hill from thru hull? Are you sure your gage isn't defective? |
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Post by lg260ss on Mar 13, 2021 10:14:23 GMT -5
Do you leave your AC running when you leave the boat. Does your condensate from the ac drain to the tank?
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Post by seasunofthesoul on Mar 15, 2021 9:22:06 GMT -5
Thanks again for the ideas. Water remains in the toilets so i don't believe there are any leaks there. I don't run the A/C while gone. I'll be keeping a sharp eye on the guage to see if that is causing doubt based on use and how much i can pump out again.
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Post by gofast24 on Mar 17, 2021 10:34:05 GMT -5
Do you leave your AC running when you leave the boat. Does your condensate from the ac drain to the tank? Our 2 X AC units condensate goes to two sump pumps, cant believe condensate would go to black water tank? |
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Post by lg260ss on Mar 18, 2021 6:54:21 GMT -5
Do you leave your AC running when you leave the boat. Does your condensate from the ac drain to the tank? Our 2 X AC units condensate goes to two sump pumps, cant believe condensate would go to black water tank? Correct, if the OP has a black water tank. But if they have a gray water system, everything goes to the tank. I don’t believe the OP specified his system. |
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Post by tc33obx on Mar 18, 2021 10:14:22 GMT -5
He has a 4460, I'm not aware of them ever having Gray water system. I'm sure they may vary depending on country of delivery and if it was delivered to a lake location in the US, but all the 4460s I've seen have had a single black water holding tank.
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Post by gofast24 on Mar 20, 2021 11:43:49 GMT -5
Hey Guys, I have an 06 4460 with macerator. My best guess would be the toilets are leaking back to the tank when you are gone. Are seals on the toilets tight/ When you return to the boat after an absence, is there water left in the toilet bowls? If not then that is the problem and fix is easy...replace the seals. Good luck! Turn off potable water pump when not at boat! Then vacu flus toilet cant leak into black water tank? Also, toilet cant continue to push water into bowl unless you push flush pedal? |
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Post by gofast24 on Mar 20, 2021 11:47:19 GMT -5
He has a 4460, I'm not aware of them ever having Gray water system. I'm sure they may vary depending on country of delivery and if it was delivered to a lake location in the US, but all the 4460s I've seen have had a single black water holding tank. Op never indicated his location or if boat delivered to otherer country and then brought to states? |
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Post by gofast24 on Apr 3, 2021 12:05:00 GMT -5
Do you leave your AC running when you leave the boat. Does your condensate from the ac drain to the tank? AC condensate should not drain to black water tank, to sump pump and then overboard! |
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