As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HNL - FLT 8666 - ON CLIMB-OUT, PILOT REPORTED ''FUEL FUMES IN COCKPIT''. AIR TURNBACK TO HNL. FUEL ACCUMULATION IN ENGINE COWL DUE TO LOOSE FUEL LINE CONNECTION AT FIREWALL FUEL FILTER. TIGHTENED THE NOSE FITTING, FLUSHED COWLING WITH SOAP AND WATER. PERFORMED GROUND RUN-UP LEAK CHECK. AIRCRAFT RETURNED TO SERVICE. (X)