I have a issue with my fuel tank pressure building up after short period of driving. I begin to hear a whining noise back by the gas inlet. When I release the gas cap gas & fumes spew out for a good minute. It seems like the gas is boiling in the tank. I can't seem to figure out why. I tried 2 different gas caps & it does not make a difference. Has anyone experienced this?

 

Have you figured out what the issue was?