What was found
CAPTAIN REPORTED, WHEN ANTI-ICE WAS TURNED ON LT ENGINE, EPR`S WENT DOWN AND RT ENGINE TO SLOW ACCELERATION REQUIRING 40 SECONDS TO ACCELERATE. DURING OVERNIGHT SERVICE LINE PS4 IN RIGHT FCU WAS DRAINED IAW MM, ANTIFLUCTUATION VALVES AND FCU ACCELERATION CAM WAS LUBRICATED AND ENGINES WERE TESTED, ALL CORRECT.