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  1. #1

    Default Ballast Bags Leaking

    I have a 2016 Mondo and have upgraded the rear bags to 900 lbs. I can fill them up completely and come back a few hours and they’ve gone down to like half full: Why would this be the case? Any idea on how to fix it as no water is in the bag suggesting the bags are leaking. Any insight would be appreciated

  2. #2
    Join Date
    Aug 2017
    Posts
    947

    Default

    Could be siphoning out the overflow.
    2019 Supra SL450

  3. #3
    Join Date
    Nov 2010
    Location
    Katy, TX
    Posts
    6,368

    Default

    You also may want to inspect the pump impellers. If they are worn too much they may not be creating a good seal and could be leaking back through the pump and out of the boat.
    David

    2017 Moomba Mojo Max Surf Edition, 2 Pair Wetsounds Rev10s powered by an SD2, 6 pair Wetsounds XS650M and Wetsounds XS12 powered by SD6 all controlled by a WS420. 2 Lumitec SeaBlaze X2 Spectrum underwater lights

    SOLD***2008 Mobius LSV, Gravity III , Wake Plate, Z5, Exile SX65c's, Exile XM9s, Exile XI12D, Exile Javelin, Exile 30.2***SOLD

  4. #4
    Join Date
    Jun 2018
    Location
    Kuna, Idaho
    Posts
    146

    Default

    Anyone have part numbers for replacement pump impellers?
    2018 Max - Wetsounds - Wake Makers upgrade

  5. #5
    Join Date
    Feb 2018
    Location
    Boating on Lake Martin, AL
    Posts
    1,523

    Default

    Quote Originally Posted by Kxmoomba View Post
    Anyone have part numbers for replacement pump impellers?
    I believe this is the one https://www.wakemakers.com/jabsco-ba...-impeller.html

    This green impeller (Jabsco part #6303-0107) is the latest generation wakeboard ballast impeller from Jabsco, designed specifically for use in all Jabsco 18220 Ballast Puppy pumps powering automated wakeboard ballast system. This is the OEM impeller for MasterCraft, Correct Craft (Air Nautique), Supra, Moomba, Yamaha, and Centurion and others.
    2019 Moomba Max "MOOMBAE"
    Mods: Wakemakers upgrade + 500 lbs of lead
    2016 Yamaha AR192 - sold

  6. #6
    Join Date
    Jun 2021
    Posts
    16

    Default

    Quote Originally Posted by dillengeraj View Post
    I have a 2016 Mondo and have upgraded the rear bags to 900 lbs. I can fill them up completely and come back a few hours and they’ve gone down to like half full: Why would this be the case? Any idea on how to fix it as no water is in the bag suggesting the bags are leaking. Any insight would be appreciated
    Check all the plugs on the bags my 2019 max was doing this I check and most of them were loose. I put Teflon tape on then and tightened then and they are good now.

  7. #7
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,953

    Default

    Did you mean no water in the Bilge? If so, then it's got to be going back out through the pump where it came in unless it's somehow siphoning through the overflows. See any water drizzle out them on side of the boat?

    Sent from my moto z4 using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  8. #8
    Join Date
    Jul 2021
    Posts
    9

    Default

    I consistently run with about 3 inches in my Bilge around the center plug. Suspect leaking ballast. How do I determine which bag is leaking. 2016 Moomba MoJo

  9. #9
    Join Date
    Jan 2021
    Location
    Columbus, Ohio
    Posts
    1,251

    Default

    I can almost guarantee you and bet real money it is the bow bag air releases, fittings, and/or hoses.

    My 2015 had the same issues. I tightened the plugs, replace hose clamps on the hoses, and made sure I had tight connection on the quick disconnects to the bags. My rears are solid and do not leak at all. The floor tank I assume is good but I have never removed the panel to check, but I cannot see any leaks through the plug port in the floor.

    Run the boat around the lake without ballast and check for water.
    Fill the each bag separately and cruise around the lake and check for water.

    I also had a small leak through my rudder port that I fixed and no more water in the bilge.....except the offset roller or kids running in and out.
    Last edited by Holdmybeer; 08-02-2021 at 03:09 PM.
    2015 Moomba Mojo Surf Edition
    4,000lbs
    Manual Flow

  10. #10
    Join Date
    May 2018
    Posts
    4,920

    Default

    Are you sure you are just not taking the wave over the transom?

    Supras like to take in water from the wave slapping the transom and taking a little water through the surf locker or rear engine vent.


    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

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