2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Fuel Pressure Release

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

NOTE: Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pressure cannot be completely released because B15 models do not have fuel return system.

With CONSULT-II 

  1. Turn ignition switch ON.
  2. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT-II.
  3. Start engine.
  4. After engine stalls, crank it two or three times to release all fuel pressure.
  5. Turn ignition switch OFF.
    Fig 1: Performing Fuel Pressure Release With Consult-II
    G00776520Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II 

  1. Remove fuel pump fuse.
  2. Start engine.
  3. After engine stalls, crank it two or three times to release all fuel pressure.
  4. Turn ignition switch OFF.
  5. Reinstall fuel pump fuse after servicing fuel system.
    Fig 2: Identifying Fuel Pump Fuse
    G00776521Courtesy of NISSAN MOTOR CO., U.S.A.
Factory Service Tools

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When to See a Mechanic

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

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