Hello! Maybe you can help me. I have a problem: My Ford Fiesta (Bj 1995) has a quite high fuel consumption (about 10-11 liters). When I open the gas station the fuel cap is to hear a hissical noise and you feel like a whole load of air is coming to you. Does someone know what this is about and does someone have tips on how to reduce the fuel consumption (except the driving style something to change ;-)) ?? MfG Beltzebub