Question about 1992 Chevrolet S-10

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How do you install injectors in a chevy s-10 pick-up?

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  • Clint Smock
    Clint Smock May 11, 2010

    What size engine? TBI? or CPI?

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  • Chevrolet Master
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Removal & Installation

how do you install injectors in a chevy s-10 - 8205896.gif
Exploded view of the fuel rail and injector mounting


Take care when servicing the fuel rail assembly to prevent dirt or contaminants from entering the fuel system. ALL openings in the fuel lines and passages should be capped or plugged while disconnected.

  1. Before disassembly, clean the fuel rail assembly with a spray type cleaner such as AC Delco® X-30A, or equivalent. After removal, DO NOT immerse the fuel rail in liquid solvent.
  2. Properly relieve the fuel system pressure and disconnect the negative battery cable.
  3. Remove the air intake duct, as necessary for access.
  4. Tag and disengage the fuel injector electrical connectors.
  5. Disengage the fuel pressure regulator vacuum line, then tag and disengage all other necessary vacuum hoses.
  6. Loosen and remove the fuel rail retaining bolts.
  7. If necessary to remove the fuel rail assembly completely from the engine compartment, or to prevent stressing and damaging the fuel lines, disconnect the fuel lines from the rail assembly.
  8. Carefully lift the fuel rail assembly and fuel injectors from the intake.
  9. Carefully release and separate the fuel injectors from the rail assembly.
  10. Remove and discard ALL old O-rings from the fuel injectors and, if disconnected, the fuel lines.
To install:
  1. Lightly coat the new O-rings with clean engine oil, then position them to the injectors and, if applicable, fuel fittings.
  2. Install the injectors to the fuel rail assembly.
  3. Carefully install the fuel rail and injectors to the intake manifold. Make sure the injectors are properly seated in their bores, but DO NOT force them into position.
  4. Install and tighten the rail retaining bolts to 62 inch lbs. (7 Nm).
  5. If removed, connect the fuel lines to the rail assembly and secure the fittings.
  6. Engage the fuel pressure regulator and any other vacuum lines, as noted during removal.
  7. Engage the injector electrical connectors.
  8. Connect the negative battery cable and cycle the ignition switch (without attempting to start the engine) in order to pressurize the fuel system, then check for leaks.
  9. Install the air intake duct.

Posted on Apr 25, 2010

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Removal & Installation

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Relieve the fuel system pressure. Refer to the fuel system relief procedure in this section.
  3. Remove engine cover.
  4. Disconnect negative battery cable.
  5. Remove upper manifold assembly.
  6. Disconnect fuel meter body electrical connection and the fuel feed and return hoses from the engine fuel pipes.
  7. Remove poppet nozzle out of the casting socket by squeezing the nozzle locking tabs together.
  8. Remove fuel meter body by releasing the locktabs.
    NOTE Each injector is calibrated. When replacing the fuel injectors, be sure to replace it with the correct injector.
  9. Remove lower hold-down plate and nuts.
  10. While pulling the poppet nozzle tube downward, push with a small prytool down between the injector terminals and remove the injectors.

    0996b43f8022cb96.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Exploded view of the fuel meter assembly, including the injectors

To install:
  1. Lubricate the new injector O-ring seats with engine oil.
  2. Install o-rings on the injector.
  3. Install fuel injector into the fuel meter body injector socket.
  4. Install lower hold-down plate and nuts. Torque the nuts to 27 inch lbs. (3 Nm).
  5. Install fuel meter body assembly into the intake manifold. Torque the fuel meter bracket retainer bolts to 88 inch. lbs. (10 Nm).
    CAUTION To reduce the risk of fire or injury ensure that the poppet nozzles are properly seated and locked in their casting sockets.
  6. Install fuel meter body into the bracket and lock all the tabs in place.
  7. Install poppet nozzles into the casting sockets.
  8. Engage electrical connections.
  9. Install new o-ring seals on the fuel return and feed hoses.
  10. Connect fuel feed and return hoses and tighten the fuel pipe nuts to 22 ft. lbs. (30 Nm).
  11. Connect negative battery cable.
  12. Turn the ignition ON for 2 seconds and then turn it OFF for 10 seconds. Again turn the ignition ON and check for leaks.
  13. Install the engine cover.

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