Has anyone else ever had this problem: I have a '99 elantra that constantly shuts off the gas pump regardless of whether I have a half a tank or a completely empty tank. I have been to multiple gas stations and have moved the pump around a million times to different angles etc. the tank spits out gas and it takes me forever to get a full tank when the pump automatically shuts off every 2 seconds. The hyundai dealer blew the lines out but it didn't help. Any advice??