What was found
THE PILOT REPORTED A FUEL SMELL IN THE COCKPIT IN FLIGHT AND TAXI. MAINTENANCE INSPECTED THE HEATER FUEL LINES, HEATER PUMP, ENGINE FUEL LINES, HEATER FILTER AND BOOST PUMPS FOR LEAKS, WITH NO DEFECTS NOTED. AN ENGINE AND HEATER OPS CHECK WERE PERFORMED, AND MAINTANCE WAS NOT ABLE TO DUPLICATE THE SMELL.