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FU(H6DO)-57 FUEL INJECTION (FUEL SYSTEMS) Fuel System Trouble in General 31.Fuel System Trouble in General A: INSPECTION NOTE: °C (32°F) throughout the winter season, use water removing agent in the fuel system to prevent freezing fuel system and accumulating water. Fill the water removing agent each time the fuel is reduced to half to Trouble and possible cause Corrective action 1. Insufficient fuel supply to injector 1) Fuel pump does not operate. ❍ Defective terminal contact Inspect contact, especially ground, and tighten it ❍ Trouble in electromagnetic or electronic circuit parts Replace the fuel pump. 2) Decline of fuel pump function Replace the fuel pump. 3) Clogged dust or water in the fuel filter Replace fuel filter, clean or replace fuel tank. 4) Clogged or bent fuel pipe or hose Clean, correct or replace the fuel pipe or hose. 5) Air mixed in the fuel system Inspect or retighten each connection part. 6) Clogged or bent air breather tube or pipe Clean, correct or replace air breather tube or pipe. 7) Damaged diaphragm of pressure regulator Replace. 2. Leakage or blow out of fuel 1) Loosened joints of the fuel pipe Retighten. 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 air breather tube or air vent 3. Gasoline smell inside of compartment 1) Loose joints at air breather tube, air vent tube, and fuel filler Retighten. 2) Defective packing air tightness on the fuel saucer Correct or replace the packing. 3) Cracked fuel separator Replace the separator. 4) Defective fuel pump modulator or circuit Replace. 4. Defective fuel meter indicator 1) Defective operation of fuel level sensor Replace. 2) Defective operation of fuel meter Replace. 3) Body integrated module malfunctioning Replace. 5. Noise 1) Large operation noise or vibration of fuel pump Replace. |