Subaru Legacy BN/BS (2015-2019) Service Manual: Fuel procedure
1. RELEASING OF FUEL PRESSURE WARNING: Place “NO OPEN FLAMES” signs near the working area. CAUTION: Be careful not to spill fuel. 1. Remove the fuse of fuel pump from main fuse box.
2. Start the engine and run it until it stalls. 3. After the engine stalls, crank it for five more seconds. 4. Turn the ignition switch to OFF. 5. Install the fuse of fuel pump to the main fuse box. 2. DRAINING FUEL (WITH SUBARU SELECT MONITOR) WARNING: Place “NO OPEN FLAMES” signs near the working area. CAUTION: Be careful not to spill fuel. NOTE: • If the fuel pump cannot be driven, refer to the procedures for draining from the fuel filler hose. Fuel > PROCEDURE • Be careful not to let the battery run-out. • Be aware that the fuel may remain in the fuel tank after draining the fuel. 1. Release the fuel pressure. Fuel > PROCEDURE 2. Remove the clip (A) securing the fuel delivery tube to the fuel pipe assembly. 3. Attach ST to the fuel pipe assembly and push ST in the direction of arrow mark to disconnect the connector of the fuel delivery tube.
CAUTION: • Be careful not to spill fuel. • Catch the fuel from the tubes using a container or cloth.
4. Connect ST to the fuel delivery tube.
5. Connect the gasoline proof hose to ST and put the end of the hose in the container. 6. Drive the fuel pump and drain the fuel using Subaru Select Monitor. CAUTION: Be careful not to spill fuel. NOTE: For detailed operation procedures, refer to “PC application help for Subaru Select Monitor”. 7. Install the related parts in the reverse order after draining the fuel. CAUTION: • Be careful not to spill fuel. • Catch the fuel from the tubes using a container or cloth. • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe. • Make sure that the quick connector is securely connected. 3. DRAINING FUEL (THROUGH THE FUEL FILLER HOSE) • Sedan model 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. 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) before the operation. NOTE: Be aware that the fuel may remain in the fuel tank after draining the fuel. 1. Lift up the vehicle. 2. Remove the rear sub frame. Rear Sub Frame > REMOVAL 3. Open the fuel filler lid and remove the fuel filler cap. 4. Drain the fuel from the fuel filler pipe through the filler opening using the gasoline proof pump and the gasoline proof hose (o10 or less). 5. Disconnect the fuel filler hoses from the fuel filler pipe. CAUTION: • Be careful not to spill fuel. • Catch the fuel from hoses using a container or cloth.
6. Set the container under the vehicle and insert the gasoline proof hose (o10 or less) into the fuel filler hose to drain the fuel. CAUTION: Be careful not to spill fuel. 7. Install the related parts in the reverse order after draining the fuel. NOTE: Correctly insert the fuel filler hose to the spool, and then install the clamp as shown. Tightening torque: 2.5 N·m (0.3 kgf-m, 1.8 ft-lb)
• OUTBACK model 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. 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) before the operation. NOTE: Be aware that the fuel may remain in the fuel tank after draining the fuel. 1. Open the fuel filler lid and remove the fuel filler cap. 2. Lift up the vehicle. 3. Drain the fuel from the fuel filler pipe through the filler opening using the gasoline proof pump and the gasoline proof hose (o10 or less). 4. Disconnect the fuel filler hoses from the fuel filler pipe. CAUTION: • Be careful not to spill fuel. • Catch the fuel from hoses using a container or cloth.
5. Set the container under the vehicle and insert the gasoline proof hose (o10 or less) into the fuel filler hose to drain the fuel. CAUTION: Be careful not to spill fuel. 6. Install the related parts in the reverse order after draining the fuel. NOTE: Correctly insert the fuel filler hose to the spool, and then install the clamp as shown. Tightening torque: 2.5 N·m (0.3 kgf-m, 1.8 ft-lb)
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Fuel system trouble in general inspection
TroublePossible causeCorrective actionInsufficient fuel supply to fuel injectora. Fuel pump does not operate. Defective terminal contactInspect contact, especially ground, and tighten it securely. ...
Other materials:
Inspection
1. Check that the engine coolant temperature sensor has no deformation, cracks or other damages.2. Immerse the engine coolant temperature sensor and a thermometer in water.CAUTION:Take care not to allow water to get into the engine coolant temperature sensor connector. Completely remove any water in ...
