What was found
(CAN) FLIGHT NR1170ONJULY 20/2000, CRA AIRCRAFT C-GSTA, S/N 182 REJECTED TAKE OFF OUT OF WINDSOR, ONTARIO (YQG) BECAUSE OF A LARGE POWER LEVER STAGGER. THE CREW REPORTED THE NR1 ENGINE AT 30% TORQUE AND THE NR2 ENGINE AT 70%. THE CREW ELECTED TO RETURN TO THE GATE AND THE PASSENGERS WERE DEPLANED. MAINTENANCE INSPECTION FOUND THAT ON GROUND RUNS AT FLIGHT IDLE THEY WERE GETTING MAX PROP RPM SETTINGS. WHILE ADVANCING THE POWER LEVER THE PROP RPM WOULD DROP THE 600 RPM. MAINTENANCE REPLACED THE MECHANICAL FUEL CONTROL UNIT, S/N ON B27006N, S/N OFF B27081N, COMPLETED SEVERAL GROUND RUNS AND THE AIRCRAFT CHECKED SERVICEABLE. AIRCRAFT RETURNED TO SERVICE WITH NO FURTHER INCIDENTS TO REPORT.