What was found
T/O AT SJC NR 2 THROTTLE MUCH FURTHER FWD THAN 1 AND 3 EGT NR 2 CREEPING UP, MAX TEMP = 880' C PULLED NR 2 THROTTLE BACK EVEN W/ 1 AND 3 GOT FIRE WARN, THROTTLE IDLE. SHUT DOWN ENGINE, FIRED BOTTLE NR 1 AS A PRECAUTION. DIVERT TO KOAK. DURING T/O N2 FOR ALL THREE MOTORS WERE APPROX. THE SAME FUEL FLOW ON NR 2 SLIGHTLY HIGHER THAN 1 AND 3. DUMPED FUEL. FOUND T-DUCT AT NR 2 ENGINE HI PRESS BLEED VALVE RUPTURED. REPLACED DUCT, HPBV AND HARNESS, FAV AND HARNESS, HPBV AND FAV SENSE AND RIGID LINES, SUPPORT RODS FOR DUCTING, LT THRUST REVERSER COOLING MANIFOLD, REPAIRED LT CORE COWL BLOW OUT DOOR. AIRCRAFT RETURNED TO SERVICE.