TM  55-2840-241-23 Table 4-1. Troubleshooting (Continued) Item Trouble Probable  cause Remedy 34 Compressor  stall a Fuel nozzle has carbon during low power buildup. operation. b. Bleed control valve has failed to open. c. Foreign object damage;  eroded  blades, vanes, or plastic coating. d. Compressor case misaligned  when  installed. 35 Excessive fuel leaking from a. Fuel pump drive shaft seal drains or weep holes. diaphragm ruptured or leaking. b. Gas producer fuel control  failure. 36 Faulty torquemeter indication. a. Faulty torque indicating system. TM 55-1520-228-23.) 37 Lack of anti-icing air. b.  Faulty  engine  torquemeter. a. Improper rigging. b. Defective anti-icing air lines. c. Anti-icing air valve stuck closed. d. Dirt collected in vane trailing  Slot. 37.1 Severe N₁ oscillation  (control PR-PG reset dump valve system) at approximately the recycling. 40° throttle lever position. a. Inspect and clean fuel nozzle. (Refer to para 5-15.) b. Replace bleed control valve. (Refer to para 5-33.) c(1). Replace the compressor case if damaged, or if erosion exceeds the acceptable limits. (Refer to Chapter 7.) c(2). If compressor rotor assembly is  damaged,  replace  engine.  (Refer to  TM  55-1520-228-23.) d. If noise monitoring indicates rub, remove and reinstall the case. (Refer to para 8-2.) a. Replace fuel pump. (Refer to para 5-9.) b. Replace fuel control. (Refer to para 5-12.) a(1). Bleed air from line to gage. a(3). Clean or replace obstructed line to gage. (Refer to TM 55-1520-228-23.) b. Replace engine. (Refer to TM 55-1520-228-23.) a. Check rigging. b. Check lines. c. Replace valve. (Refer to para 5-32.) d. Remove anti-icing airlines at the compressor front support and blow through struts and out slots. Move throttle out of affected range. Change  18 4-10.1/(4-10.2  blank)