Fuel Supply: Overview Mitsubishi Eclipse IV

GENERAL DESCRIPTION

1. The fuel tank is located under the floor below the rear seats.
2. A fuel cut-off valve is utilized to prevent fuel from leaking out in the event of a collision.
3. A fuel pump module, including fuel pump, fuel filter, fuel pump pressure regulator and fuel level sensor, is used to lighten weight and improve serviceability.

Scheme 1

FUEL PUMP OPERATION CHECK

< 2.4L Engine >: Refer to - On-vehicle Service, FUEL PUMP OPERATION CHECK .

< 3.8L Engine >: Refer to - On-vehicle Service, FUEL PUMP OPERATION CHECK .

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1. Remove the rear seat cushion assembly (Refer to «REAR SEAT ASSEMBLY»(ref-241332-S40040027152006081100000) ).
2. Remove the hole cover.
3. Disconnect the fuel pump module connector.
4. Crank the engine for two seconds or more.
5. If the engine does not start, turn the ignition switch to "LOCK" (OFF) position.
6. If the engine starts, stop it naturally and turn the ignition switch to "LOCK" (OFF) position. CAUTION: As there will be some pressure remaining in the fuel pipe line, cover it with a shop towel to prevent fuel from spraying out.
7. Disconnect the fuel tank differential pressure sensor connector and fuel high-pressure hose.
8. Remove the fuel pump module mounting nuts. CAUTION: When removing the fuel pump module from the fuel tank, be careful not to spill the fuel remaining in the fuel pump module. When withdrawing the fuel pump module from the fuel tank, be careful not to damage the module unit and the float.
9. Drain the fuel remaining in the fuel pump module while removing the fuel pump module from the service hole.
10. Disconnect the suction hose and remove the fuel pump module from the fuel tank.
11. Replace the packing with a new one. CAUTION: When installing the fuel pump module into the fuel tank, be careful not to damage the module unit and the float.
12. Connect the suction hose to the fuel pump module, and install the fuel pump module to the fuel tank whilst ensuring that the suction hose is not kinked.
13. Install the plate to the fuel tank. CAUTION: After installing, slightly pull the fuel high-pressure hose and ensure that there is no disengaged fuel high-pressure hose. Also confirm that there is approximately 3 mm (0.12 inch) play at this time.
14. Connect the fuel pump module connector, fuel tank differential pressure sensor connector and fuel high-pressure hose connection.
15. Install the hole cover.
16. Install the rear seat cushion assembly (Refer to «REAR SEAT ASSEMBLY»(ref-241332-S40040027152006081100000) ).

Scheme 11

1. Place a drain pan, and disconnect the fuel tank vapor hose A at pipe side. NOTE: If fuel leaks from the fuel leveling hose at this stage, the leveling valve may be defective.
2. Open the fuel cap, and fill the fuel tank up.
3. If fuel does not leak from the fuel tank vapor hose A with the fuel tank full, the leveling valve is normal. If it does leak, the leveling valve may be defective. Lower the fuel tank from the vehicle and replace the valve.
4. Reconnect the fuel tank vapor hose A at the pipe side.

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1. Remove the rear seat cushion assembly (Refer to «REAR SEAT ASSEMBLY»(ref-241332-S40040027152006081100000) ).
2. Remove the hole cover.
3. Disconnect the fuel pump module connector and fuel tank differential pressure sensor connector connection.

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Scheme 18

1. Remove the grommet.
2. Disconnect the fuel level sensor (sub) connector.