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Home >> Subaru >> 2008 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DOTC) >> Fuel >> Procedure >> Draining Fuel

Draining Fuel

(WITH SUBARU SELECT MONITOR) 

WARNING: Place "NO OPEN FLAMES" signs near the working area.
CAUTION: Be careful not to spill fuel.
NOTE:
  1. Release the fuel pressure. <Ref. to RELEASING OF FUEL PRESSURE , PROCEDURE, Fuel. >
  2. Attach ST to the fuel delivery pipe and push ST in the direction of arrow mark to disconnect the fuel delivery hose.

    ST 42099AE000 QUICK CONNECTOR RELEASE

    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
    Fig 1: Locating Fuel Delivery Hose
    G05660529Courtesy of SUBARU OF AMERICA, INC.
  3. Connect ST to the fuel delivery hose. ST 18471AA000 FUEL PIPE ADAPTER
  4. Connect the gasoline proof hose to ST, and put the hose end into the container.
  5. Drive the fuel pump and drain the fuel using Subaru Select Monitor. <Ref. to FUEL PUMP CONTROL (ON/OFF DRIVE) , OPERATION, System Operation Check Mode.>
    CAUTION: Be careful not to spill fuel.


(THROUGH THE FUEL FILLER HOSE) 

WARNING: Place "NO OPEN FLAMES" signs near the working area.
CAUTION:
  • Be careful not to spill fuel.
  • Fuel may be remaining in the fuel filler pipe. Using a gasoline proof pump and a gasoline proof hose of 10 mm dia. or less, drain the fuel from the fuel filler pipe through the filler opening before performing any work.
  1. Set the vehicle on a lift.
  2. Lift up the vehicle.
  3. Remove the rear exhaust pipe and muffler. <Ref. to REMOVAL , Rear Exhaust Pipe.> <Ref. to REMOVAL , Muffler.>
  4. Remove the rear sub frame. <Ref. to REMOVAL , Rear Sub Frame.>
  5. Open the fuel filler flap lid, and remove the fuel filler cap.
  6. Drain the fuel from the fuel filler pipe through the fill opening using the gasoline proof pump and the gasoline proof hose (10 mm dia. or less).
  7. Disconnect the fuel filler hose (A) from the fuel filler pipe assembly.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
    Fig 1: Identifying Fuel Filler Hose And Evaporation Hose
    G05660530Courtesy of SUBARU OF AMERICA, INC.
  8. Set a container under the vehicle and insert a gasoline proof hose of 10 mm dia. or less into the fuel filler hose to drain the fuel.
CAUTION: Be careful not to spill fuel.
WARNING: Place "NO OPEN FLAMES" signs near the working area.
CAUTION:
  • Be careful not to spill fuel.
  • Fuel may remain in the fuel filler pipe. Perform the work after draining the fuel from the fuel filler pipe through the fill opening using the gasoline proof pump and the gasoline proof hose (010 or less).
  1. Set the vehicle on a lift.
  2. Lift up the vehicle.
  3. Remove the rear exhaust pipe and muffler. <Ref. to REMOVAL , Rear Exhaust Pipe.> <Ref. to REMOVAL , Muffler.>
  4. Open the fuel filler flap lid, and remove the fuel filler cap.
  5. Drain the fuel from the fuel filler pipe through the fill opening using the gasoline proof pump and the gasoline proof hose (o10 or less).
  6. Disconnect the fuel filler hose from the fuel filler pipe assembly.
    CAUTION:
    • Be careful not to spill fuel.
    • Catch the fuel from hoses using a container or cloth.
    Fig 2: Identifying Fuel Filler Hose To Fuel Filler Pipe Assembly
    G05660531Courtesy of SUBARU OF AMERICA, INC.
  7. Set a container under the vehicle and insert a gasoline proof hose of 10 mm dia. or less into the fuel filler hose to drain the fuel.
    CAUTION: Be careful not to spill fuel.