As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENG SHUTDOWN JUST PRIOR TO ENG STARTER CUTOUT ON GRND. SECOND ATTEMPT GOT NO FUEL FLOW. GROUNDED - YES. FOUND SPAR VALVE #2 ENG C/B POPPED ON P 6-3 B3. RESET C/B & STARTED #2 ENG @ GATE. GOOD START, NO DEFECTS NOTED. REF MM 20-60-01. SEAMC STEVE NOTIFIED.