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Aft holding tank vent

Discussion in 'Carver Yacht' started by nomad69, Feb 23, 2014.

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  1. nomad69, Feb 23, 2014
    #1
    nomad69

    nomad69 Member

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    Curious if anyone with a 1995 355 carver might know which vent is the rear holding tank. I think mine may be plugged up. On the last pump out the holding tank wanted to collapse like it wasn't venting properly. I am going to try back flushing it with water but don't want to flush the wrong tank.
  2. Capt J, Feb 23, 2014
    #2
    Capt J

    Capt J Senior Member

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    Don't back flush it with water. It may have a sealand holding tank vent filter and that will destroy it and plug it, and if it has one, it needs to be changed. Take the hose off of the tank and try blowing it out with an air compressor. Follow that hose to where it goes through the hull, see if there is a filter, if so change it.
  3. nomad69, Feb 23, 2014
    #3
    nomad69

    nomad69 Member

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    I have a limited view down in the hatch and I don't see a filter anywhere close to the tank. Are they near the tank or vent thru hull fitting? Also I see a couple of 1 1/2" approx. sized hose (assuming this is the sanitation hose and pump out hose)and another hose that looks like its approximatly 1" o.d. Coming off the top corner. I am guessing this is the vent maybe?
  4. NYCAP123, Feb 23, 2014
    #4
    NYCAP123

    NYCAP123 Senior Member

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    Do you have a vacu-flush head? If so you have a filter somewhere along the line. It's several inches long and hard to miss. It could be anywhere along the vent line. If you don't, I don't know any other manufacturers that use the filter, but there could be. Once I determined there was no filter I'd use a short flexible probe, because the odds are that the blockage is a bug's nest near the outboard end.

    If however you have a filter that will undoubtedly be the issue.

    If you're unfamiliar with these filters Goggle Vacu-Flush filters or log on to the WM catalog.
  5. nomad69, Feb 24, 2014
    #5
    nomad69

    nomad69 Member

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    I do have the vacu flush heads but do not see anything in line like a filter.
  6. NYCAP123, Feb 25, 2014
    #6
    NYCAP123

    NYCAP123 Senior Member

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  7. seldomdry, Feb 25, 2014
    #7
    seldomdry

    seldomdry Member

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    My filters are located in bilge under aft cabin and galley floor.
  8. nomad69, Feb 25, 2014
    #8
    nomad69

    nomad69 Member

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    Are they close to the tank? The only floor hatches (aft cabin) I have found are the two starboard side under carpet next to the head door and in front of the night stand. One hatch has the vacu pump and the other has the waste tank and shower sump.
  9. NYCAP123, Feb 25, 2014
    #9
    NYCAP123

    NYCAP123 Senior Member

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    Let's get down to basics. Open every closed area of your boat and see what's there. This is your boat. Besides learning where everything is on your boat you'll also know that the prior owner didn't forget a stash of drugs.:cool: Explore.
  10. nomad69, Feb 25, 2014
    #10
    nomad69

    nomad69 Member

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    I haven't explored every inch of her yet but slowly getting there. If I find that stash of drugs, I'll let you have them. If I find the drug money ............well you'll just never know. :D
  11. Capt J, Feb 25, 2014
    #11
    Capt J

    Capt J Senior Member

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    It's really not that hard to follow the vent hose from the tank to the vent on the side of the boat on a 35' boat. Now is it?
  12. nomad69, Feb 26, 2014
    #12
    nomad69

    nomad69 Member

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    I never said it was that hard, I believe I asked if anyone had knowledge of its location. I was looking to save a little time tearing into everything.

    Sometimes it can be a little more difficult chasing items on 35' boat. Everything is a little tight and harder to access. Sometimes bigger is better.
  13. NYCAP123, Feb 26, 2014
    #13
    NYCAP123

    NYCAP123 Senior Member

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    What Capt.J and I are trying to get across is that it will take very little time to trace the line, and it's time well spent. Even if I knew where your manufacturer generally puts it, it may be different on your boat. Different installers of various equipment for the same manufacturer often do things differently, and then there's what might have been done aftermarket.
    Seldomdry told you where his is. That might be a good place to start looking, but I DK if he has the same model and years as yours.
  14. nomad69, Feb 26, 2014
    #14
    nomad69

    nomad69 Member

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    I'm good with that. I will start the search this weekend. Thanks for the advise.
  15. seldomdry, Feb 27, 2014
    #15
    seldomdry

    seldomdry Member

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    Same boat '95 355......
  16. nomad69, Feb 27, 2014
    #16
    nomad69

    nomad69 Member

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    Gas or diesel?
  17. seldomdry, Feb 28, 2014
    #17
    seldomdry

    seldomdry Member

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    She is Gas..
  18. nomad69, Mar 1, 2014
    #18
    nomad69

    nomad69 Member

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    No filters in line other than a dirt dobber. Cleared the bug carcass wrapped in mud from the line and hopefully the waste tank will breath now.
  19. Aimhii, Apr 12, 2014
    #19
    Aimhii

    Aimhii Member

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    Pics are always helpful
  20. nomad69, Apr 12, 2014
    #20
    nomad69

    nomad69 Member

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    Here is a picture of a dirt dauber. Get one of those in a vent and it will stop it up every time.

    Attached Files:

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