Toyota Celica 1986-1993 Repair Guide

Fuel Filter

Print

REMOVAL & INSTALLATION



Since dirt is the absolute enemy of a fuel injection system, Celicas incorporate several fuel filters within the system. Most are not routinely replaced since they are extremely hard to reach (inside the fuel tank for example). The replaceable fuel filter is in the fuel line, either mounted on the firewall under the hood or located at the rear of the car near the tank. The filter should be inspected for external damage and/or leakage at least at every tune-up.

There are 2 types of fittings used on fuel filter connections. The banjo fitting or union bolt type uses a bolt and 2 washers to prevent leakage between an eyelet and the filter. The flare fitting type uses no washers or bolts. It uses a thread interference pattern to make a tight connection.



Click image to see an enlarged view

Fig. Fig. 1 Replace the old fuel filter O-rings and tighten the bolts by hand at firstbanjo type fittings



Click image to see an enlarged view

Fig. Fig. 2 Tighten the fittings by hand at first to avoid cross-threadingflare type fitting

  1. Unbolt the retaining screws and remove the protective shield (if equipped) for the fuel filter.
  2.  
  3. Place a pan under the delivery pipe (large connection) to catch the dripping fuel and slowly loosen the banjo fitting bolt or flare fitting at the bottom of the filter to bleed off the fuel pressure.
  4.  



Click image to see an enlarged view

Fig. Fig. 3 Tighten the fuel line connections with a torque wrenchflare type fitting shown



Click image to see an enlarged view

Fig. Fig. 4 When removing the fuel lines, plug them and always place a pan underneath to catch any dripping fuel


CAUTION
To avoid personal injury, remember that the fuel system is under pressure. Release pressure slowly and contain spillage. Wear eye protection and observe no smoking/no open flame precautions. Have a dry powder fire extinguisher within arm's reach at all times.

  1. Remove the banjo bolt or flare fitting and drain the remaining fuel.
  2.  
  3. Disconnect and plug the inlet line.
  4.  
  5. Unbolt and carefully remove the fuel filter. It may still contain some fuel.
  6.  

To install:


WARNING
When tightening the fuel line bolts to the fuel filter, you must use a torque wrench. The tightening torque is very important, as under or over tightening may cause fuel leakage. Insure that there is sufficient clearance between the fuel filter, lines and any other parts.

  1. Coat the flare threads or banjo bolt threads and copper washers lightly with engine oil. Always use new washers.
  2.  
  3. Hand tighten the inlet line to the fuel filter.
  4.  
  5. Install the fuel filter and then tighten the banjo type bolt to 22 ft. lbs. (29 Nm) or the flare fitting to 23 ft. lbs. (30 Nm).
  6.  


WARNING
The fuel pump builds high pressure within the lines. If new gaskets are not used, a high-pressure leak may spray fuel onto the engine or other hot surface.

  1. Run the engine for a few minutes and check for any fuel leaks.
  2.  
  3. Install the protective shield.
  4.  

 
label.common.footer.alt.autozoneLogo