Overflow from freshwater tank

Discussion in 'The Beginner' started by Cyclists, Oct 8, 2015.

  1. Cyclists

    Cyclists Funster

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    When I fill up the freshwater tank it overflows (pours out from underneath). When I have a look under the van I cannot see anything other than what looks like a vent. Is it normal for it to overflow out this vent to such extent when filling the freshwater tank.


    Thanks


    John
     
  2. vwalan

    vwalan Funster

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    could be an overflow . but it sounds as if the breather valve is letting water out .
    mine as done it almost since new .
    i fill till i see the first drip then stop.
    i do use a watering can usually so its easier to stop.
    with a hose it can waste a fair bit .
     
  3. DP_JAY

    DP_JAY Funster Life Member

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    Does it leak out all the time you are filling or only when its full?
    Most have an overflow of some sort, some on top of the tank, some on the filler hose.
     
  4. Cyclists

    Cyclists Funster

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    cheers ..it's only when it's full. I fill with a hose mainly, so yes it pours out for a while then stops.
     
  5. scotjimland

    scotjimland Funster Life Member

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    Yes, mine also overflows from a pipe under the van..

    it can be very embarrassing on an aire when it's flowing down the tarmac to next door :rolleyes:

    When filling, I now watch or get Jan to watch the tank level gauge (which is quite accurate) ..
    when it shows full.. turn off water.. no overflow.
     
  6. CWH

    CWH Funster Life Member

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    First time we did that we were on a site in the Highlands.
    "Listen, you can hear water running - there must be a brook close by!"
    Hmm, yes, VERY close by! :whistle::rolleyes::LOL:
     
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  7. knokinonabit

    knokinonabit Funster

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    That's how I know when ours is full. :whistle2: :wink:

    Must be wonderful to have an accurate gauge.
    As soon as I start filling ours, even from empty, the gauge shows full. :Eeek:
     
  8. pappajohn

    pappajohn Funster Life Member

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    The overflow should be a plastic/rubber pipe sticking out below floor level....not a vent.

    If its coming out of a floor vent you have a problem because water is flooding onto the van floor then out the vent.
     
  9. scotjimland

    scotjimland Funster Life Member

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    mine is not rocket science.. but there is nothing to break..

    it uses the KISS principal.. it has four s/s probes.. so it only shows, 0 - 25 - 50 - 75 - 100%

    grey tank the same system..
    .. but they get dirty and start to give erratic readings .. but easy cleaned through the top inspection hatch
     
  10. musson

    musson Funster

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    mine has overflow when filling (Swift)
     
  11. knokinonabit

    knokinonabit Funster

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    Yes, ours is the same, but, there is always a but, it is an Autotrail and the tank is underslung.
    The only way to get at the top of the tank is to remove it from the motorhome.

    We have had ours done :swear2:




    .
     
  12. scotjimland

    scotjimland Funster Life Member

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    On mine, both tanks are between the double floor and both have an inspection hatch inside the van.. great design.
     
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  13. Badknee

    Badknee Funster

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    It's not so much a vent or an overflow, it's a very clever device called a "don't flood your MoHo" system. Invented I'm sure to stop idiots like myself from filling the tank too much and allowing water to come out of the inspection hatch. ;):LOL:
     
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  14. knokinonabit

    knokinonabit Funster

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    Another reason why I would never buy another Autotrail.
     
  15. pappajohn

    pappajohn Funster Life Member

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    Wouldnt come out the inspection hatch if you remembered to refit the cover. :LOL:
     
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  16. johnp10

    johnp10 Funster

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    Ours does the same.
    Don't worry about other folks seeing it, it's only fresh water and they can see you are filling, not dumping.
     
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