Partner Sites:  www.BOEmarine.com | www.CBangler.com | www.BandofBoaters.com

Page 1 of 3 123 LastLast
Results 1 to 10 of 24
  1. #1
    Join Date
    Nov 2006
    Location
    Barnegat Bay, NJ..........and.........St Petersburg, Fl
    Boat
    Sea Ray
    Details
    1984 360 aft cabin aft cabin..........the first aft cabin Sea Ray made (1983-84)! located NJ an
    Engine(s)
    Twin small blocks on the 360 Twin 5.7 's on the 370
    Posts
    34

    VacuFlush help.....desperately neeeded

    When VFlush works...they are great.

    I have one of the 2 in my boat that is, however, making me crazy:

    VacuFlush VG 112 - the system with its own vacuum storage tank

    Symptoms over the last 8 or so weeks:

    = after flushing it would slowly leak off vacuum so that it came on and quickly pumped up enough to shut it off. Every 4 hours or so.

    = New duck bills. NO change.

    = 4 hours reduced to maybe every 2 hours

    = Got so bad that it just came on and would pump until it literally stalled and threw the switch in the panel

    = Replaced bellows. Cramped location only allowed me to get 3 of the 4 bolts holding the motor in place secured. Was rock solid nevertheless.

    = Here's the weird part...............it got fixed! The new bellows fixed it!

    = 8 days later.......it starts leaking vacuum again. Just like originally.....once every 3 or 4 hours it would come on.
    How crazy is that? It was working just fine and then slid into this failure mode.

    = 2 days ago......will hold vacuum for only 30 mins or so

    = We resort to turning the unit on and off at the fuse panel to use the malfunctioning forward head

    = Today...it pumps a bunch and doesn't seem to want to shut off at all

    I would replace the vacuum limiter switch in a heartbeat if I was sure it was the problem. Hate buying it at VacuFush overpricing retail and then discovering it isn't the problem.

    The hose from the commode to the pump haunts me. It is a potential leak spot. Replacing is a bear on both ends due to cramped quarters. Would do it........if I was sure it would make a difference. Having the unit work properly for 8 days suggests the hose it OK....yes?

    I am so stumped.

    Appreciate any thoughts.

  2. #2
    Join Date
    Jan 2015
    Location
    Mattapoisett, MA
    Boat
    Sea Ray
    Details
    2007 Sundancer 44
    Engine(s)
    Cummins QSC 8.3
    Posts
    197

    Re: VacuFlush help.....desperately neeeded

    The bowl seal may be the issue. Does the water get sucked out of the bowl as well? If so its most definitely the bowl seal.

    The other test you can do is go to your local big box home center and get a 1.5" test plug (or whatever size your waste pipes are) and disconnect the waste hose from the bowl, insert plug and see if that holds. If not there is a leak downstream from bowl.


    2007 44DA Daddy's Toy
    Cummins QSC 8.3 500
    Highfield CL290 Yamaha F9.9

  3. #3
    Join Date
    Jan 2012
    Location
    Boston/Cape Cod
    Boat
    Sea Ray
    Details
    1986 Sea Ray 390 Express Garmin 4212 Chartplotter Garmin 24 HD Radar Garmin GSD 22 Sounder Garm
    Engine(s)
    454 Crusaders
    Posts
    723

    Re: VacuFlush help.....desperately neeeded

    Does the bowl hold water? If it doesn't then the bowl seal is leaking and with it the vacuum. If it does then maybe the seal at the base of the toilet has failed. If vacuum builds up and the pump shuts off then the problem is not the switch.

  4. #4
    Join Date
    Sep 2009
    Location
    West River, MD
    Boat
    Sea Ray
    Details
    40 MY
    Engine(s)
    QSB 425
    Posts
    721

    Re: VacuFlush help.....desperately neeeded

    Quote Originally Posted by swaterhouse View Post
    The bowl seal may be the issue. Does the water get sucked out of the bowl as well? If so its most definitely the bowl seal.

    The other test you can do is go to your local big box home center and get a 1.5" test plug (or whatever size your waste pipes are) and disconnect the waste hose from the bowl, insert plug and see if that holds. If not there is a leak downstream from bowl.
    It's also a good idea to do the plug test right at the Vacuflush unit. Take the inlet hose to the unit off, plug the inlet, then turn the pump on. If that holds and the base held then the leak is in the hose.
    Al
    2008 40MY
    Twin CMD QSB-425
    9KW Onan

  5. #5
    Join Date
    Feb 2009
    Location
    New Orleans
    Boat
    Sea Ray
    Details
    1998 450DA
    Engine(s)
    Cat 3126
    Posts
    48

    Re: VacuFlush help.....desperately neeeded

    Just got mine repaired recently. Had the same view of replacing the hose as you. Took the toilet apart and took the base off the hose and put the test plug one the hose. It then held the vacuum so the leak had to be in the toilet base itself. Ordered a new base, installed it and no more problems. Do a search on "vacuflush" and you will see my original post that references a youtube video that is very helpful and a source for the part and help.

    1998 450DA Cat 3126

  6. #6
    Join Date
    Jun 2012
    Location
    Franklin, TN - Old Hickory Lake
    Boat
    Sea Ray
    Details
    400 Sedan Bridge '96
    Engine(s)
    Cat 3116
    Posts
    477

    VacuFlush help.....desperately neeeded

    I would start with a flush ball repair kit that includes the flush ball shaft. The shaft has two rubber seals that are quite possibly the source of a leak. Sounds like you have addressed most other causes except the hose. This solved my issue.


    Sent from my iPhone using Tapatalk

  7. #7
    Join Date
    Apr 2015
    Location
    Perth, Western Australia
    Boat
    Sea Ray
    Details
    2006 38 Sundancer
    Engine(s)
    Mercruiser 8.1S Horizons / ZF V Drives
    Posts
    494

    Re: VacuFlush help.....desperately neeeded

    [QUOTE=Prosideus;923888]I would start with a flush ball repair kit that includes the flush ball shaft. The shaft has two rubber seals that are quite possibly the source of a leak. Sounds like you have addressed most other causes except the hose. This solved my issue.


    Sent from my iPhone using Tapatalk[/QUOTE

    Flush ball repair kit fixed mine too after changing duckbills and bowl seal to no avail.

  8. #8
    Join Date
    Jun 2016
    Location
    Houston, Texas
    Boat
    Sea Ray
    Details
    2001 Sea Ray 460 Sundancer 2014 Seadoo 155 LTD 2105 Seadoo 130 SE
    Engine(s)
    Cummins 6CTA 8.3L
    Posts
    424

    VacuFlush help.....desperately neeeded

    I could literally talk about this for hours. I have worked on my 4 times, soon to be 5. The short version is you have to find the leak using a plug and then buy the replacement parts. Frankly if I had to do it all over again I would have bought the duckbills, bellows, o rings, diptube, inlet elbow and done it all the first time. Personally, mine is the vacuum tank so I will be replacing that next weekend.


    Sent from my iPhone using Tapatalk

  9. #9
    Join Date
    Nov 2006
    Location
    Barnegat Bay, NJ..........and.........St Petersburg, Fl
    Boat
    Sea Ray
    Details
    1984 360 aft cabin aft cabin..........the first aft cabin Sea Ray made (1983-84)! located NJ an
    Engine(s)
    Twin small blocks on the 360 Twin 5.7 's on the 370
    Posts
    34

    Re: VacuFlush help.....desperately neeeded

    Water in the bowl does hold. Not even a faint ripple to suggest a leak.

    Not a bad idea on the plug. thanks

  10. #10
    Join Date
    Nov 2006
    Location
    Barnegat Bay, NJ..........and.........St Petersburg, Fl
    Boat
    Sea Ray
    Details
    1984 360 aft cabin aft cabin..........the first aft cabin Sea Ray made (1983-84)! located NJ an
    Engine(s)
    Twin small blocks on the 360 Twin 5.7 's on the 370
    Posts
    34

    Re: VacuFlush help.....desperately neeeded

    Water holds.

    Uncertain as to where the seal at the base is...but I ll look for it.

    Good thought on the limiter switch.....thanks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •