What was found
WHILE CLIMBING THROUGH FL210 EXPERIENCED A LOUD POP FROM ENGINE #2 ACCOMPANIED BY A MOMENTARY EGT EXCEEDANCE; OPERATED ENGINE AT REDUCED THRUST SETTING FR THE REMINDER OF THE FLIGHT WITH AIR RETURN TO SJC. OVERWEIGHT LANDING WAS NOT ACCOMPLISHED REFERENCE ORIGINAL WRITE-UP TTG8Q00X0QZX. SINCE ORIGINAL WRITE-UP WAS ASSIGNED TO ENGINE SN IN ERROR WHEN ENGINE WAS REMOVED IT UNASSIGNED THE CARD AND INITIATED A REPAIR ORDER TIED TO THE ENGINE. THAT CARD WAS CHANGED FROM LOG PAGE TO NON-ROUTINE SO THAT THIS CARD CAN REPRESENT THE ORIGINAL FAULT/LOG PAGE SIGN OFF.<[01] REMOVED AND REPLACED #2 ENGINE PER MT 771-00-01.<BR>C/W CONDITIONAL INSP 05-51-59 AMM.