Water issue?

Discussion in 'Motorhome Chat' started by gordoncbrown, Feb 15, 2015.

  1. gordoncbrown

    gordoncbrown Funster

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    Still getting used to the new to us Autoquest 155. A couple of times when I have filled up the water at home when I get to my destination the indicator for the water level shows half full. When we set off it was at full, all pipes primed and hw tank full? Last time I topped it back up with about 25litres. Any clues as to where it's gone?
     
  2. Southampton

    Southampton Funster Life Member

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    Probably through the overflow pipe as you are driving along. Mine does the same.
     
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  3. highwayman

    highwayman Funster Life Member

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    Hi
    Possibly out the overflow every time you go around a corner, you might be getting a syphon effect goin on. We had the same problem and solved it by putting a small tap on the end of the overflow, just remember to open it once sited.

    Cheers. Nige
     
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  4. Masman

    Masman Funster

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    sometimes I have had the same problem.water gauges are not always correct.Just a thought Also are you on level ground when you are filling up.
     
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  5. chaser

    chaser Funster

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    We had the same problem , what I did was put an inline hose pipe tap on the bottom of the over flow pipe, cost pence, only downside is you have to turn it one when filling or you get blowback, and then remember to switch it off when full, thought it might have to switch it on again on site to use the taps but have found it works fine left off all the time except for filling.
     
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  6. GJH

    GJH Funster Life Member

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    Autoquest water tank indicators are notoriously inaccurate. We found with our Autoquest 100 that we got used to knowing how much water we used and that was more accurate than the gauge. More annoying was the amount of water left in the tank when the pump ran dry because the intake was mounted too high.
     
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  7. Cal54

    Cal54 Funster Life Member

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    Appreciate that if you are wild camping then perhaps you need a full tank of water when you set off, but if not wilding I would only take what I need, less weight, improved MPG.
     
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  8. gordoncbrown

    gordoncbrown Funster

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    Thanks for all the answers. Dave, it is on level ground on the driveway. Good shout though. Anyone post a pic of the tap modification and a link to buy it? Didn't think I could lose that much through the overflow but makes sense when the siphoning effect comes in to play and others having similar issues is reassuring that it is the siphoning effect.
     
  9. chaser

    chaser Funster

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  10. cruiser

    cruiser Funster Life Member

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    you are lucky at least you can get water in yours I cant get the locked cap of,
     
  11. maison

    maison Funster

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    We always travel with the tank half full. This avoids further loss and also reduces the total weight of the M/H.

    We started doing this after weighing a previous M/H and finding that was the only way to stay within the plated weight. It then became a habit. We don't tend to wild camp much and find that on the French Aires we can normally top up regularly enough, if not every day.
     
  12. pappajohn

    pappajohn Funster Life Member

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    Drill in the barrel......its knackered anyway.
     
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  13. cruiser

    cruiser Funster Life Member

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    thanks pappajohn. will do that.
     
  14. JeanLuc

    JeanLuc Funster

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    Have you checked that the frost protection valve (often called the 'dump valve') on the Truma heater is closed before you fill, and that it is still closed when you arrive? (I am assuming that yours has a dump valve). The valve is held closed by 12V supply. It is set to open at around 4ºC and cannot be reset until the temperature is around 8ºC. This protects the Truma from frost damage and it will often activate at this time of year. I have, in the past, filled up at home and arrived almost empty because the valve had opened en-route. I now have a clip that holds the valve shut in these conditions BUT it's vital to remember, if using a clip, to take it off once you have the Truma running. Others have used a clothes peg for the same purpose.
     
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  15. wingman

    wingman Funster

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    Hi @gordoncbrown.

    My new(ish) 155 has a dodgy gauge. Like a fool, I expected it to be accurate until I joined MHF! Then I found out that many gauges are seriously unreliable!

    The only way I can guarantee that it's full is to fill it until it runs out of the filler!

    I'm sure you know that it is possible during cold weather for the heater to dump water as a safety measure. If water is dripping from the rear of the vehicle, start looking there at the dump valve end. After dumping has occurred, the valve has to be recycled (i.e. moved to Open then to closed again).

    As @Cal54 says, unless you're wilding, there's no need to carry a full tank. Just half a tank will still give you 35litres. Get some on site on arrival, or if you can't be bothered (like me), just top it up using a plastic water carrier.

    The 155's a great van by the way.

    Reg's
    James
     
  16. gordoncbrown

    gordoncbrown Funster

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    Thanks for all the good info. Just been underneath. Not sure which one is the overflow. Would it be the overflow from the top of the HW tank? Couldn't see one on the fresh water tank. If you have one on yours a pic might help me. Might just be I need to open my eyes.

    Thanks
     
  17. Reallyretired

    Reallyretired Funster

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    We always travel with a full tank. Not all aires have water, and some that do require the purchase of a token from a shop that's closed, especially on Sundays.
    I have never noticed any difference in fuel consumption between a full or empty water tank. The weight of water only corresponds to around 2% of the total weight of the vehicle (120L tank) so wouldn't expect to.
     
  18. gordoncbrown

    gordoncbrown Funster

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    Probably being a bit thick but I cannot find an overflow pipe from the fresh water tank or under the seats. The only open ends I can find under the moho are the drain valve from the water heater and the overflow from the water heater. Could it be the overflow from the water heater that is causing the syphoning?
     
  19. chaser

    chaser Funster

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    How do you fill your tank, if by hose what happens when it is full, does it just run out of the filler or does it run out underneath somewhere, can't see the water heater pipe doing anything ,else it would be running all the time.
     
  20. chaser

    chaser Funster

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    Hold on , just read your op again, how do you know it's full when you start, are you just relying on the gauge, or is it realy full till running out, if it's the gauge way it's probably just settling down in transit.
    Edit , the gauge not the water settleing
     
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