As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI, IN RIGHT ENG FUEL VALVE REMAINED OPEN. ENG VALVE LIGHT REMAINED ON AFTER ENG SHUTDOWN FOR APPROX 30 SEC. LARGE AMOUNT OF WHITE SMOKE OBSERVED COMING FROM RIGHT ENG. REPLACED FUEL SHUTOFF SOLENOID VALVE. PERFORMED ENG RUN-UP. OPS CK LEAK CHECK OK PER M/M.