Mazda 323/626/929/GLC/MX-6/RX-7 1978-1989

Electric Fuel Pump

Print

REMOVAL & INSTALLATION




CAUTION
The fuel system is under pressure even when the fuel pump is not in operation. Always relieve the fuel system pressure before servicing the system. Also, wrap a clean cloth around the fuel connection when loosening to catch any fuel spray from residual pressure and take precautions to avoid the risk of fire.

1984-85 RX-7
  1. Remove the storage compartment located behind the driver's seat and detach the fuel pump connector. Properly relieve the fuel system pressure.
  2.  
  3. Raise the vehicle and support it safely.
  4.  
  5. Remove the pump bracket clamp bolt.
  6.  
  7. Disconnect the inlet and outlet hoses from the fuel pump and plug the lines. Make a note of where each hose connects.
  8.  
  9. Remove the fuel pump from its bracket.
  10.  

To install:
  1. Position the fuel pump in its bracket. Unplug, then connect the fuel lines to their proper fittings.
  2.  
  3. Install the pump bracket clamp bolt, then lower the vehicle.
  4.  
  5. Attach the fuel pump connector and install the storage compartment.
  6.  

1986-89 RX-7



See Figure 1

  1. Lift up the rear mat.
  2.  
  3. Unfasten and remove the fuel pump cover.
  4.  
  5. Relieve the fuel system pressure by running the engine and disengaging the fuel pump electrical connector.
  6.  
  7. Disconnect and plug the main fuel and fuel return hoses. Make a note of where each hose connects.
  8.  
  9. Unfasten the retaining screws and remove the fuel pump from the tank.
  10.  

To install:
  1. Install the fuel pump into the fuel tank and fasten the retaining screws.
  2.  
  3. Connect the main fuel hose (labeled A in the illustration) to the A fitting on the pump. Do the same for the B hose. Secure the hoses with the hose clips and make sure they are tight.
  4.  
  5. Attach the pump's electrical connector.
  6.  
  7. Install the fuel pump cover and reposition the rear mat.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: The fuel pump is mounted inside the fuel tank, beneath a cover plate-1986-89 RX-7

TESTING



See Figure 2

  1. Relieve the fuel system pressure, as previously described.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Disconnect the main fuel hose from the main fuel line.
  6.  
  7. Connect a suitable fuel pressure gauge.
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Connect the terminals of the yellow check connector with a jumper wire (see illustration). Turn the ignition switch ON to operate the fuel pump.
  12.  
  13. Check that the fuel pressure is within the following specifications:Fuel Pump Pressure:

    1984-85-49.8-71.1 psi (343-490 kPa)
     
    1986-89 except Turbo-64-85.3 psi (441-588 kPa)
     
    1986-89 Turbo-49.8-71.1 psi (343-490 kPa)
     

  14.  



Click image to see an enlarged view

Fig. Fig. 2: Fuel pump test connector location on RX-7

 
label.common.footer.alt.autozoneLogo