Mechanics

HELLO, MY 'S FUEL GAUGE WILL NOT RESPOND TO ADDITIONAL FUEL UNTIL I'VE DRIVEN 5 OR 10 MILES. I'VE TRIED PUSHING DOWN ON THE TRUNK LID TO FREE A STUCK FLOAT. I'VE TRIED RESETING THE DRIVER'S COMPUTER. ANY IDEAS? THANKS M

2002 Lincoln Continental • 50,000 miles