2003 Mitsubishi Lancer EvolutionFACTORY OEM SERVICE PROCEDURE

Fuel System Pressure Release: Diamante

Remove the rear seat cushion. Remove the fuel pump/fuel gauge floor cover plate and disconnect the wiring connector at the fuel pump/gauge assembly. See Fig 1. Start the engine and let it run until it stops naturally, turn the ignition off. Re-connect the fuel pump/gauge wiring harness connector. Install the rear seat cushion.

Fig 1: Identifying Fuel Pump Connector (Diamante)
G00229855Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.