There is no water pressure. the airleak is coming from the water fill at the front of the trailer. there is no water in the trailer as i dont use the city water hookup. this is the bit that is leaking out air. I can feel and hear it when i have filled my tank and turned on my water pump. It seems to have come loose, i think there may have been a spring inside it that now doesnt work. I'm sorry i'm not very good at explaining. I'll take a photo tomorrow and post it, i think that would be the best thing. Thanks for your reply though. Any help always greatly appreciated. x x