Help! Sound from right wheel well or under right dash

[NewArt]

Is this sound similar to blowing across a Coke bottle? I have this at about 25-30 mph, changed the fuel line vent valve and... no change. Don't know what it is. Guess I'll try tape, it's cheaper! What article did you see for the tape experiment?

[TMass]

Yes: it is just like blowing across a coke bottle; usually at slow speeds, 2nd or 3rd gear at 2600 to 3400 RPMs and only if your applying gas. I found a couple of threads here and at ReenTech that addressed "Gsd Cap Noise". My vent is to the right of the gas cap door when it is open...there is a gap that shows the rest of the fill compartment. Some stuck a sponge in...I went with a piece of duct tape with a couple of small nail holes I put in so there is some venting. The correct solution is to replace a control valve for the charcoal filter but i understand that to cost about $500. I'll stick with the tape solution for now.