What was found
KEROSENE SMELL REPORTED ON GROUND AND ONCE IN CRUISE AROUND DOOR 2L. FLIGHT EN ROUTE EWR-LHR AND DIVERTED TO YQX. *S/D* ACCOMPLISHED IDLE AND HIGH POWER ENGINE RUNS. INSPECTED AND SEARCHED CARGO PITS WITH AIRCRAFT PRESSURIZED AND UNPRESSURIZED, NOTHING FOUND. CHECKED FOR BOTH EXTERNAL AND INTERNAL FUEL LEAKS OF THE CENTER FUEL TANK AND APU FUEL LINE. NO EVIDENCE OF FUEL LEAK WAS FOUND. REPLACED DOOR 2L AND 2R HEATERS (P/N 116817-2) PRECAUTIONARY.