As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENG FUEL VALVE FAILED TO OPEN DURING ENG START. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE, MAINTENANCE RESEATED & CLEANED CONNECTOR @ #1 ENG FUEL ACT.OP'S CHK OK PER AMM 73-00-00 NIL DEFFECT NOTED. AICRAFT RETURNED TO SERVICE.