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

Fuel Filter

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All Subarus use a cartridge fuel filter, located in the fuel line. The filter is the disposable type which cannot be cleaned. It should be replaced every 12 months/12000 miles (20,000 km) on pre-1980 vehicles and 15 months/15000 miles (25,000 km) whichever occurs first, on 1980 and later vehicles.

REMOVAL & INSTALLATION




WARNING
Before removing the fuel lines, use two small pairs of locking pliers to pinch off the fuel lines on both sides of the fuel filter. Place a small piece of rubber between the jaws of the pliers to prevent damage to the fuel lines.

Carbureted Models

On the carbureted models, the fuel filter is located in the engine compartment.

  1. Disconnect the negative battery cable. Loosen, but DO NOT remove, the two hose clamp retainers, located at either end of the filter.
  2.  



Click image to see an enlarged view

Fig. Fig. 1 Use pliers to loosen the two hose clamp retainers

  1. Work the hoses from the filter necks.
  2.  
  3. Snap the filter out of it's mounting bracket.
  4.  
  5. Discard the old filter.
  6.  


WARNING
When removing the old filter, be careful not to allow any fuel to drop onto hot engine components.

To install:

  1. Install the new filter in it's mounting bracket.
  2.  
  3. Check the hoses for cracks and wear.
  4.  
  5. Install the hoses on the filter necks and tighten the hose clamps securely.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Start the vehicle and check for leaks.
  10.  

Fuel Injected Models

The fuel filter is located on a bracket in the engine compartment on the front-left fender.

  1. Reduce the fuel pressure by performing the following procedures:
  2.  
    1. Disconnect the electrical wiring connector from the fuel pump.
    2.  
    3. Crank the engine for more than five seconds. If the engine starts, let the engine run until it stops.
    4.  
    5. Turn the ignition switch OFF and reconnect the electrical wiring connector of the fuel pump.
    6.  

  3. Disconnect the negative battery cable. Loosen the hose clamp screws and pull the filter from the bracket.
  4.  



Click image to see an enlarged view

Fig. Fig. 2 Fuel filter location on fuel injected models

To install:

  1. Install the filter in the bracket.
  2.  
  3. Install the hoses on the filter and tighten the hose clamps securely.
  4.  
  5. Start the engine and check for leaks.
  6.  

 
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