Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1998 1998 Service Manual ENGINE SECTION FUEL SYSTEM MSA5TCD98L20945

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2-8   [K100]                                           DIAGNOSTICS
1. Fuel System Trouble in General


1. Fuel System Trouble in
General
                         Trouble and possible cause                                                Corrective action
 1. Insufficient fuel supply to the injector
      1)       Fuel pump will not operate.
                                                                                  Inspect connections, especially ground, and
               k Defective terminal contact.
                                                                                  tighten securely.
               k Trouble in electromagnetic or electronic circuit parts.          Replace fuel pump.
      2)       Lowering of fuel pump function.                                    Replace 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 fuel pipe or hose.
      5)       Air is mixed in the fuel system.                                   Inspect or retighten each connection part.
                                                                                  Clean, correct or replace air breather tube or
      6)       Clogged or bent breather tube or pipe.
                                                                                  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.
                                                                                  Clean, correct or replace air breather tube or air
      5)       Clogged or bent air breather tube or air vent tube.
                                                                                  vent tube.
 3. Gasoline smell inside of compartment
               Loose joints at air breather tube, air vent tube and fuel filler
      1)                                                                          Retightening.
               pipe.
      2)       Defective packing air tightness on the fuel saucer.                Correct or replace packing.
      3)       Cracked fuel separator.                                            Replace separator.
 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.


NOTE:                                                                   Refueling will also complement the effect of anti-
When the vehicle is left unattended for an                              freeze solution each time the fuel level drops to
extended period of time, water may accumulate in                        about one-half. After the winter season, drain water
the fuel tank.                                                          which may have accumulated in the fuel filter and
1) To prevent water condensation:                                       fuel tank in the manner same as that described

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