I was checking out my set of wheels I just recently got mounted enkei RPF1's with hankook tires. I unscrewed one of the valve stem covers and the wheel just leaks air from the valve stem as if I'm pushing down on the little pin valve. When I screw the cap back on the pressure stops the leak??? I'm guessing one of the enkei billet valve stems that came with the wheels is defective? Has anyone had a similar problem?

 

have the schraeder (SP) valve checked out; is it there???. it may not be fully seated. it requires a tool similar to a blunt ended screwdriver with a slot. any tire shop will have it or you can buy one.