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FU(H6DO)-76 FUEL INJECTION (FUEL SYSTEMS) FUEL SYSTEM TROUBLE IN GENERAL 31.Fuel System Trouble in General A: INSPECTION NOTE: (1) Top off the fuel tank or drain the fuel com- • Refilling the fuel tank. (1) Cold areas ° C (32 ° F) throughout the winter season, use an anti-freeze solution in the cool- season, drain water which may have accumulat- • Observe the instructions, notes, etc., indicated Trouble and possible cause Corrective action 1. Insufficient fuel supply to the injector 1) Fuel pump will not operate. ❍ Defective terminal contact. Inspect connections, especially ground, and tighten ❍ Trouble in electromagnetic or electronic circuit parts. Replace the fuel pump. 2) Lowering of fuel pump function. Replace the fuel pump. 3) Clogged dust or water in the fuel filter. Replace the fuel filter, clean or replace the fuel tank. 4) Clogged or bent fuel pipe or hose. Clean, correct or replace the fuel pipe or hose. 5) Air is mixed in the fuel system. Inspect or retighten each connection part. 6) Clogged or bent breather tube or pipe. Clean, correct or replace the air breather tube or pipe. 7) Damaged diaphragm of pressure regulator. Replace. 2. Leakage or blow out fuel 1) Loosened joints of the fuel pipe. Retightening. 2) Cracked fuel pipe, hose and fuel tank. Replace. 3) Defective welding part on the fuel tank. Replace. 4) Defective drain packing of the fuel tank. Replace. 5) Clogged or bent air breather tube or air vent tube. Clean, correct or replace the air breather tube or air vent 3. Gasoline smell inside of compartment 1) Loose joints at air breather tube, air vent tube and fuel Retightening. 2) Defective packing air tightness on the fuel saucer. Correct or replace packing. 3) Cracked fuel separator. Replace the separator. 4) Inoperative fuel pump modulator or circuit. Replace. 4. Defective fuel meter indicator 1) Defective operation of fuel meter unit. Replace. 2) Defective operation of fuel meter. Replace. 5. Noise 1) Large operation noise or vibration of fuel pump. Replace. |