I have developed a fuel leak that seems to occur because of too much fuel tank pressure. If I fill my tank and pull into my driveway, gasoline will start escaping past the fuel cap about 1/2 hour after I park. I'm assuming that this is because the gas is warming and expanding. It does not leak after I run several gallons of gas out of the tank. I do not understand the rat's nest of hoses in the passenger-side rear quarter panel, but I'm assuming that some of that is to control fuel tank pressure? If that is the case, is there a control for excessive fuel-tank pressure? It seems to me that the tank is developing too much pressure and forcing fuel past the filler cap.