Subaru Coupes/Sedans/Wagons 1985-1996 Repair Guide

Fuel Filter

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The fuel filter should be replaced and all fuel system hoses and connection should be inspected at 12,000 mile (19,000 km) interval for carburetor equipped models, and 30,000 mile (48,300 km) intervals for fuel injected models. When the vehicle is operated in extremely cold or hot conditions, contamination of the filter may occur and the filter should be replaced more often.

REMOVAL & INSTALLATION



Carbureted Engines

See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Use pliers to squeeze and remove spring-type hose clamps



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Fig. Fig. 2: Fuel filter mounted underneath the vehicle

Before removing the fuel lines, use hose pliers or equivalent, to pinch off the fuel lines on both sides of the fuel filter.

On carbureted models, the fuel filter is located in the engine compartment, close to the passenger side of the firewall or under the vehicle beneath the driver's seat.

  1. Disconnect the negative battery cable.
  2.  
  3. If the fuel filter is located in the engine compartment;
    1. Snap the filter out of its mounting bracket.
    2.  
    3. Loosen, but DO NOT remove, the two hose clamp retainers, located at either end of the filter.
    4.  
    5. Remove the hoses from the filter necks.
    6.  
    7. Discard the old filter.
    8.  

  4.  
  5. If the filter is located under the vehicle;
    1. Raise and support the vehicle safely on jackstands.
    2.  
    3. Locate the fuel filter on a bracket under the center of the vehicle.
    4.  
    5. Place a pan under the filter, to catch any excess spilled fuel.
    6.  
    7. Disconnect the fuel pump electrical connector. Unfasten the hose clamps at both ends of the filter and slide the hoses off the filter.
    8.  
    9. As required, remove the bolts from the fuel pump bracket and pull the filter off the bracket to remove. Once removed, discard the filter.
    10.  

  6.  


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

To install:
  1. Check the hoses for cracks and wear, and replace if needed.
  2.  
  3. Install the new filter into the mounting bracket.
  4.  
  5. Connect the hoses on the filter necks and tighten the hose clamps securely.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Lower the vehicle if raised.
  10.  
  11. Start the vehicle and check for leaks.
  12.  

Fuel Injected Models

See Figures 3, 4 and 5

Click image to see an enlarged view

Fig. Fig. 3: Fuel filter and pump-Justy models



Click image to see an enlarged view

Fig. Fig. 4: Fuel filter-SVX models



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Fig. Fig. 5: Loosen the hose clamps securing the fuel lines to the filter

  1. Locate the fuel filter in the engine compartment on the left inside fender.
  2.  
  3. Reduce the fuel pressure as follows:
    1. Disconnect the electrical wiring connector from the fuel pump.
    2.  
    3. Crank the engine for five seconds or more. If the engine starts, let the engine run until it stops.
    4.  
    5. Turn the ignition switch OFF and reconnect the electrical wiring connector to the fuel pump.
    6.  

  4.  
  5. Disconnect the negative battery cable.
  6.  
  7. Loosen the hose clamp screws and slide the hoses off the filter. Remove the filter from the bracket.
  8.  

To install:
  1. Inspect the hoses for wear or cracks, and replace if needed.
  2.  
  3. Install the new filter into the bracket and tighten the hose clamp screws.
  4.  
  5. Lower the vehicle and connect the negative battery cable.
  6.  
  7. Start the engine and check for leaks.
  8.  

 
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