Rear bags siphoning badly no matter what I do

[j.mo]

Bros. This madness is going to cause me to spend 200k on a new G. Please help me figure this out [emoji23]
My rear bags are siphoning badly, no matter how new, or old the impeller for the pump is. What is causing this bleed by?


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[KnoxMojo]

Is it doing it while sitting still or only while moving? Could your overflow be lower than the bags pushing it out the side? How old is the boat? Could be a bad pump. Is it all bags or just 1? Autowake accidentally turned on?

[j.mo]

Is it doing it while sitting still or only while moving? Could your overflow be lower than the bags pushing it out the side? How old is the boat? Could be a bad pump. Is it all bags or just 1? Autowake accidentally turned on?

2013 242. The overflow has a T ball valve from wakemakers that is shut.
Moving or stationary is a good question, I believe both.
The drain is not draining, because according to the gauges on the screen, and the timers, it still believes the bags are full. Happens only on the rear bags in the lockers. They are the 1100 wakemakers bags. I don’t remember it happening with the factory bags, but that was years ago and I only used the factory a few times before the upgrade.
But I’ve tried changing impellers multiple times, adding the check valve on the overflow. You name it. Only thing I can think of is a one-way check on the fill, but that’s also where it drains with the reversible pump. So that’s a no go.
It drives me insane having to constantly mess with the timers to keep them filled while surfing. Like I will literally buy a new boat because of it lol


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[KnoxMojo]

Need to ask on the Facebook page and maybe the actual Supra forum. I am guessing you have a bad pump or pumps or your bags aren't actually filling all the way and have trapped air then air deflating down. The gauge is based off timers, it would have no way of knowing if your bags were draining out. It is most likely something simple. There are some great deals on leftover 23's and new 24's out there! Lol

[j.mo]

Need to ask on the Facebook page and maybe the actual Supra forum. I am guessing you have a bad pump or pumps or your bags aren't actually filling all the way and have trapped air then air deflating down. The gauge is based off timers, it would have no way of knowing if your bags were draining out. It is most likely something simple. There are some great deals on leftover 23's and new 24's out there! Lol

Oh they are full. Trust me, I burp them [emoji23].
Boat has 200hrs. I don’t really WANT to upgrade for a few more years. If there’s any hiccups or bumps and bruises I’d rather it be to this boat and not a brand new one. It’s very clean, I’ve had it almost 5 years now and since 80hrs. I’m content it’s just the few small issues that I grow more impatient with, as I don’t NEED to keep it.
I’ll see what I can find or maybe just drop it off and have the pumps looked at


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[sandm]

shorted switch or wiring and when the bags shut off they start to drain again?
can you fill them up and disconnect the pump power to see if they stay full?

[KnoxMojo]

Following Sandm, shut your through hulls off after filling, will take another factor out of the equation.

[j.mo]

shorted switch or wiring and when the bags shut off they start to drain again?
can you fill them up and disconnect the pump power to see if they stay full?

I really just honestly think it’s bleeding by the impeller and siphoning out. The pumps are definitely not running. You can hear them when they are on to drain/fill.


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[sandm]

ah. never had the reversibles before.

bleeding down would make sense especially given the added weight but I would also think that others would have a similar issue as lots use the reversibles.
you should also be able to see it coming out the vent tube unless they are underwater when underway. I had tons of issues even with check valves on the old supra but I ran that thing listed/slammed and the vent tubes were usually underwater especially when underway. something about the water suction when running as it flowed past the drain ports. when parked, I never lost a drop even with vents buried in the lake.

[j.mo]

ah. never had the reversibles before.

bleeding down would make sense especially given the added weight but I would also think that others would have a similar issue as lots use the reversibles.
you should also be able to see it coming out the vent tube unless they are underwater when underway. I had tons of issues even with check valves on the old supra but I ran that thing listed/slammed and the vent tubes were usually underwater especially when underway. something about the water suction when running as it flowed past the drain ports. when parked, I never lost a drop even with vents buried in the lake.

THAT would make more sense. It’s pretty slammed when full. Especially with the added weight of my batteries. The swim platform is a good 4” under water.

But if the vents have a closed valve? Then what.

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[sandm]

Is it a check valve or an actual valve u close and open.

I ended up adding line to the vents on both the supra and my 1st tige for passive draining.

[cucv]

If your bags fill to a higher elevation than your vent port, the water will go thru the check valve, out the vent until the bag is level with the vent port. I had this problem on my Tige with upgraded bags, so I would top off occasionally. I contemplated adding in electric valves, wired in with the pump so they would open when the pump is running.

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[j.mo]

Is it a check valve or an actual valve u close and open.

I ended up adding line to the vents on both the supra and my 1st tige for passive draining.

It’s an actual T valve.

https://www.wakemakers.com/collections/anti-siphon-check-valves/products/pvc-ball-valve

With that closed, there’s no way for the water to get out of that route. It has to be coming from the bottom fill/drain.
The bilge is bone dry always as well. It’s going back out of that damn pump past the impeller lol


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[HFarr]

Is the pump housing worn where it mates with the impeller? Make sure there are no grooves in it. Just another possibillity if you are sure the impellers are good.

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[KnoxMojo]

It’s an actual T valve.

https://www.wakemakers.com/collections/anti-siphon-check-valves/products/pvc-ball-valve

With that closed, there’s no way for the water to get out of that route. It has to be coming from the bottom fill/drain.
The bilge is bone dry always as well. It’s going back out of that damn pump past the impeller lol


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Fill your bags, close your pump valves, see what happens.

[j.mo]

Fill your bags, close your pump valves, see what happens.

I’ll try that tomorrow


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[KnoxMojo]

I’ll try that tomorrow


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Any update? Or you buying a new boat? Lol

[j.mo]

Any update? Or you buying a new boat? Lol

We took the boat out the other day, but we didn’t fill the ballast. We just threw the anchor at the sand bar.
This week I’m in Nashville again.

However, the day before I came out here my neighbor pulled up with a new to him 2023 23lsv with 45hrs that he picked up for 119k that is very enticing lol


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[j.mo]

I was at a local dealer I frequent for parts/supplies, a tige/cobalt dealer, who since the downfall of Tommy’s is now a cobalt/malibu/axis dealer.
One of the sales guys I know there, really good guy btw, recommended swapping my green impellers to purple as they are a harder/stiffer compound and might provide more resistance to my draining problem.


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[MJHSupra]

I was at a local dealer I frequent for parts/supplies, a tige/cobalt dealer, who since the downfall of Tommy’s is now a cobalt/malibu/axis dealer.
One of the sales guys I know there, really good guy btw, recommended swapping my green impellers to purple as they are a harder/stiffer compound and might provide more resistance to my draining problem.


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Interesting. I would be surprised if the purple and green are the same size. I recall someone telling me they are the same diameter but are different widths.
The purple ones were used in the Jabsco Ballast King Reversible Pumps (OEM part). Those were the higher volume pumps.