Recently everytime I take off the gas cap it release a lot of pressure(in the form of a hissing sound) and a clunk is heard (sounds like the tank is returning to it's shape or something). Even if I run the car for a minute there is a pressure relief. And when the car is off there is a pressure relief even after it had just been relieved a minute before. I replaced the gas cap thinking that it wasn't venting, but that didn't work. Is this normal? If not what needs to be replaced or checked? Please help. :D
have the same problem?
Tuesday, March 6th, 2007 AT 8:31 PM