How do you change a fuel injector on a 2002 Chevy Trailblazer?

Remove the fuel injectors. Remove the fuel pressure regulator. Remove the fuel injector harness from the fuel rail….Connect the fuel injector electrical connectors.

1. Connect the fuel pressure regulator vacuum line.
2. Install the intake manifold.
3. Connect the negative battery cable.
4. Inspect for leaks.

How many fuel injectors does a 2002 Chevy Trailblazer have?

Re-Manufactured Genuine Delphi Set of 6 Fuel Injectors For 2002-2003-2004 Chevrolet Trailblazer 4.2L 25313185.

How to replace a fuel injector on a 2003 Chevrolet TrailBlazer?

Replacing a fuel injector on a 2003 Chevrolet TrailBlazer 4.2-liter engine involves removing the entire fuel rail. If you have not tried to clean the fuel injectors, you should try cleaning them first, with a fuel cleaning system available at any auto-parts dealer.

How do you replace a fuel rail injector?

Remove the retaining clips and remove the injectors from the fuel rail assembly. Remove and discard the O-rings and seals (two per injector). Replace the injector O-rings. Apply a light coat of clean engine oil to the O-rings and press the injector into the fuel rail until seated. Install the injector retaining clips.

What to do if fuel injector touches engine?

If one of the injectors touches the engine, lift the rail off and make sure that no debris got onto the end of the injector. If it did, clean off the bottom of the injector with carburetor cleaner. Tighten the fuel rail retaining bolts to 89 inch-pounds of torque. Reattach the fuel feed and return lines on the rail.

How do you change the injector on a Honda Accord?

Pull the injector off the fuel rail. Oil the new injector O-ring seats with engine oil. Slide the new O-ring on the injector (each injector comes with a new O-ring and retainer clip). Snap the new retainer clip onto the injector. Push the injector into its socket on the fuel rail with the connector facing outward.

Replacing a fuel injector on a 2003 Chevrolet TrailBlazer 4.2-liter engine involves removing the entire fuel rail. If you have not tried to clean the fuel injectors, you should try cleaning them first, with a fuel cleaning system available at any auto-parts dealer.

Remove the retaining clips and remove the injectors from the fuel rail assembly. Remove and discard the O-rings and seals (two per injector). Replace the injector O-rings. Apply a light coat of clean engine oil to the O-rings and press the injector into the fuel rail until seated. Install the injector retaining clips.

If one of the injectors touches the engine, lift the rail off and make sure that no debris got onto the end of the injector. If it did, clean off the bottom of the injector with carburetor cleaner. Tighten the fuel rail retaining bolts to 89 inch-pounds of torque. Reattach the fuel feed and return lines on the rail.

Pull the injector off the fuel rail. Oil the new injector O-ring seats with engine oil. Slide the new O-ring on the injector (each injector comes with a new O-ring and retainer clip). Snap the new retainer clip onto the injector. Push the injector into its socket on the fuel rail with the connector facing outward.