As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS THAT NR 1 ENGINE EXHAUST GAS TEMPERATURE (EGT) IS 35 DEGREES HIGHER THAN NR 2 ENGINE EGT AND CLIMBING. FUEL FLOW ON NR 1 IS 800 PPH GREATER THAT NR 2. RETURNED TO MIA. ENGINE REPLACED AT MIA. FOUND 2.5 BLEED VALVE BELLCRANK PIVOT PIN FAILED. PART WAS PRE-SB PW4G-112-72-60. PROJECT IS UNDERWAY TO UPGRADE BLEED DESIGN TO SUBSEQUENT SB PW4G-112-72-106.