1995 symphony water tank

Well I’m up in the highlands and have just tried filling my fresh water tank and to my horror it’s not filling it’s just peeing out from under the ply board sheet. Thing is I was away in March and no leaks and I drained the tank when I got home. Could there be an airlock or something.Any ideas will be helpful I’m fed up filling water bottles
.

Are you sure that its empty? Mine does that when its full.

Frank

Yes frankit’s completely empty,it took a good half hour to drain in March. But now trying to fill it it comes back through the filler,that’s why I was thinking air lock

There is a breather on the tank, so there should not be any airlocks. its from the breather that water comes out when the tank is full.
What are you filling it with? [don't say water]

Frank

Hose pipe from a water tap on site.it takes about 3minutes accepting water then blows back through filler and leaks behind the ply. It’s not even registering on my water gauge even though I reset it in march

Just checked my water meter and now it’s saying full ?i will see if it drops throughout the evening thanks for your help

Are you absolutely sure its not full? don't go by the gauge they are totally inaccurate. I only ever set mine after filling up - and it's different every time.

You could try filling it more slowly - perhaps the water is going in too fast for the breather to keep up - although I doubt it.

Try opening a tap to see if air comes out while you are filling the tank?

Frank

I will have a go tomorrow,I just want to relax I’ve been on the road since 4.30 this morning. Will let you know tomorrow cheers for the help chazz

Don't forget to let me know how it goes - I'm intrigued

Frank

I had a problem last year could fill with water found it was the vent I disconnected it and blew down the pipe moved a bit of something and was able to fill.

Haha after timing all the caravaners filling there rolling tanks with the stop watch on my phone I’ve over filled the tank it took them 2minutes to fill and with them having bigger tanks it should of taken me about a minute. I will keep an eye on it next time I fill up Cheers again folks

Glad its sorted - could you not sleep?

Frank

Haha unfortunately I get up at 5am every day no
Matter what.
It’s a curse

well after 8 days away and no further problems with the water tank i guess i had just over filled it. i now only have 3 things to sort on the van now all of which are a pain in the to fix oh well 

Strange one i've not heard of happening before. As Frank mentioned the top of the tank has breathers so when full, water flows out there...or should do!