What was found
ON TAKEOFF ROLL NR 3 ENGINE EPR INDICATOR SUDDENLY INCREASED TO 2.02 UNITS AFTER ALL ENGINES HAD BEEN SPOOLED AND STABLE AND ALL POWER LEVERS ALIGNED. EGT ALSO INCREASED TO MAX TAKEOFF LIMITS. ABORTED TAKEOFF AT 80 KIAS AND REJECTED TAKEOFF CHECKLIST WAS ACCOMPLISHED. CHECKED NR 3 ENGINE AT BLAST FENCE; PERFORMED RUN UP AND TROUBLE-SHOOTING INDICATES EPR SYSTEM ERRONEUS; ALL OTHER PARAMETERS FOUND NORMAL IAW MM. ENTERED NR 3 EPR SYSTEM ON DMI 18494 AS PER MEL 77-1-2 CATEGORY A. CLEARED DMI 18494 ON 4/17/04; DURING RUN-UP FOUND COMPRESSOR BLEED VALVE OUT OF SCHEDULE (STICKING) REMOVED & REPLACED NR 3 SURGE BLEED VALVE IAW MM 75-30-3. OPERATIONAL CHECK NORMAL, ALL PARAMETERS OK.