We are having a strong fuel smell problem with a 328i after fuel fill-up. If the vehicle is run about 50-60 miles and the tank is down accordingly the smell is non-existant. A local shop checked the evap. system, replaced the filler cap, replaced the left fuel sending unit gasket; replaced the evap. system purge valve. The fuel smell still remains...and it is very strong. Lines and fittings have been checked and there is no leaking visible. We assume that the problem is fuel quantity related, but we are stumped. Any ideas out there?