Subaru ff-1/1300/1400/1600/1800/Brat 1970-1984 Repair Guide

Electric Fuel Pump

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REMOVAL & INSTALLATION



  1. Loosen the fuel pump bracket-to-chassis nuts or bolts and lower the pump; be careful not to lose any washers or cushions.
  2.  
  3. Remove the fuel delivery hoses from the fuel pump.
  4.  
  5. Disengage the electrical harness connector from the fuel pump.
  6.  
  7. Remove the pump.
  8.  
  9. Inspect the fuel pump; if found to be defective, it should be replaced.
  10.  

To install:

  1. Reverse the removal procedures. Be sure the ground wire does not contact the pump body or the unit may vibrate. Start the engine and check for leaks.
  2.  



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Fig. Fig. 1 Loosen the fuel pump bracket-to-chassis nuts or bolts and lower the pump



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Fig. Fig. 2 Remove the fuel delivery hoses from the pump



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Fig. Fig. 3 Disengage the electrical harness connector from the fuel pump

PRESSURE TESTING



  1. Raise and support the vehicle on jackstands.
  2.  
  3. Using a fuel pressure gauge, connect into the fuel line.
  4.  
  5. Turn the ignition switch On and observe the fuel pressure; it should be 2.6-3.3 psi (15-22 kPa) in carbureted vehicles. If the fuel pump does not meet specifications, replace the pump.
  6.  
  7. After testing, disconnect the pressure gauge and reconnect the fuel line.
  8.  

PUMP FILTER REPLACEMENT



The Bendix type fuel pump used on these models has an internal filter in addition to an inline fuel filter. To change the filter element, proceed in the following manner:

  1. Remove the pump from the car.
  2.  
  3. Invert the pump assembly so that the end cover is facing up. Otherwise, when you remove the cover the parts could fall out.
  4.  
  5. Remove the ground lead screw from the end cover.
  6.  
  7. Carefully remove the end cover from the pump body by turning the cover.
  8.  
  9. Remove the gasket and filter elements from the pump.
  10.  
  11. Insert a new filter element and reassemble the end cover to the pump in the reverse order of its removal.
  12.  



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Fig. Fig. 4 Invert the pump assembly so that the end cover is facing up



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Fig. Fig. 5 Fuel pump and filter used on ff-1 and 1300G models

 
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