GM Corsica/Beretta 1988-1996 Repair Guide

Fuel Injector

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REMOVAL & INSTALLATION



See Figures 1 and 2


WARNING
When removing the injectors, be careful not to damage the electrical connector pins (on top of the injector), the injector fuel filter and the nozzle. The fuel injector is serviced as a complete assembly ONLY. The injector is an electrical component and should not be immersed in any kind of cleaner.

  1. Properly relieve the fuel system pressure.
  2.  
  3. If not done already, disconnect the negative battery cable.
  4.  
  5. Remove the TBI cover and gasket.
  6.  
  7. Detach the electrical connector from the fuel injector.
  8.  
  9. Remove the injector retainer screw and retainer.
  10.  
  11. Using a fulcrum, place a suitable tool under the ridge opposite the connector end and carefully pry the injector out, as shown in the accompanying figure.
  12.  



Click image to see an enlarged view

Fig. Fig. 1: Use a prytool and fulcrum to carefully remove the injector from the throttle body cavity

  1. Remove and discard the injector upper and lower O-rings, and the O-rings in the fuel injector cavity.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the fuel injector, O-rings and related components

To install:

WARNING
Be sure to replace the injector with an identical part. Injectors from other models can fit in the Model 700, but are calibrated for different flow rates. There is a part number located on the top of the injector

  1. Inspect the filter for evidence of contamination.
  2.  
  3. Lubricate the new upper and lower O-rings with automatic transmission fluid and place them on the injector. Make sure the upper O-ring is in the groove and the lower one is flush up against the filter.
  4.  
  5. Install the injector assembly by pushing it straight into the fuel injector cavity.
  6.  

Make sure the electrical connector end on the injector is facing in the general direction to the cut-out in the fuel meter body for the wire grommet.

  1. Install the injector retainer, using appropriate thread locking compound on the retainer attaching screw. Tighten to 27 inch lbs. (3.0 Nm).
  2.  
  3. Attach the fuel injector electrical connector.
  4.  
  5. Connect the negative battery cable. With the engine OFF and the ignition in the ON position, check for fuel leaks.
  6.  
  7. Install the TBI cover and gasket.
  8.  

 
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