Mazda MX-5 NA silhouetteMX-5 NA

FUEL SYSTEM

F-109prose procedure
Continued from F-108

Fuel pump replacement

  1. 1
    Remove the rear package trim.
    Illustration of the rear of the vehicle interior showing the rear package trim and the service hole cover location for accessing the fuel pump.
    05U0FX-154
  2. 2
    Remove the service hole cover.
  3. 4
    Remove the fuel pump cover.
    Photo of the fuel pump access opening with the fuel pump cover visible, showing the area to be exposed before removing the cover, connectors and hoses.
    05U0FX-155
  4. 5
    Disconnect the fuel pump connector.
  5. 6
    Disconnect the fuel hoses.
  6. 7
    Remove the fuel pump and fuel tank gauge sender unit assembly.
  7. 8
    Remove the fuel pump.
    Illustration of the removed fuel pump and fuel tank gauge sender unit assembly along with the mounting bracket.
    05U0FX-156
  8. 9
    Install in the reverse order of removal, referring to Installation Note.

Installation note

O-ring set

O-ring set installation note

  1. 1
    Use a new O-ring set. (O-ring, cap, and spacer)
    Diagram showing the O-ring set components: cap, O-ring, and spacer. Labels FUEL TANK GAUGE SENDER UNIT SIDE and FUEL PUMP SIDE identify the orientation. Items labeled CAP, O-RING, SPACER.
    05U0FX-157
  2. 2
    Apply oil or fuel to the O-ring set before installing.
  3. 3
    To confirm sealing of the O-ring, after assembling the fuel pump and fuel tank gauge sender unit, blow air through the fuel main pipe and verify that no air flows.
    If air flows the check ball may be stuck. Shake the fuel pump 2 or 3 times and recheck.

Fuel pump

Fuel pump installation note

  1. 1
    After installing the fuel pump to the bracket, pull down the fuel pump down so that it is tight against the bracket.
    Photo of the fuel pump installed in its mounting bracket, illustrating that the pump must be pulled down tight against the bracket during installation.
    05U0FX-233
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