As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, PILOTS NOTICED A FUEL DISCREPANCY. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT FURTHER EVENT. GROUND MAINTENANCE FOUND THE NR 1 ENGINE LEAKING FUEL DUE TO A CUT/TORN SEAL BETWEEN THE HYDRO MECHANICAL UNIT AND THE FUEL PUMP. INSTALLED NEW SEAL.