As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENG STARTS AND TAXI OUT, NOTICED LEFT ENGINE EGT INOP. NOTE: EGT LEFT ENGINE 72C RH 369C. CREW RETURNED TO THE GATE (BTB). MTC REMOVED AND REPLACED THERMOCOUPLE JUNCTION BOX IAW 767 300 AMM 77-21-03 UP TO STEP 4 EGT INDICATING SYSTEM OPS TEST AND FOUND PROBE #8 DAMAGED. REMOVED AND REPLACED LH ENG #8 THERMOCOUPLE PROBE IAW B767 AMM 77-21-01. OPS TEST GOOD. EGT INDICATION NORMAL. ENG RUN PERFORMED BY J.C. IAW B767 AMM 71-00-00. A/C REMAINS NO ETOPS. A/C RETURNED TO SERVICE.