GM 17113204 Pipe Kit,Fuel Injection Fuel Feed & Return

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All open fittings, lines and holes must be capped or plugged to prevent dirt from entering the system when any components are removed. When replacing components of the fuel rail and injector assembly, fuel injectors are calibrated with different flow rates and must not be interchanged with injectors from a different application. To replace the throttle body, remove the air inlet duct and disconnect the wiring connectors from the Idle Air Control (IAC) valve and Throttle Position Sensor (TPS). Detach the accelerator cable and cruise control cable (if equipped) from the throttle body, remove the accelerator cable bracket, and then remove the throttle body bolts and the throttle body. Clean the gasket surfaces and install a new gasket before reinstallation. To replace the fuel rail assembly, remove the distributor and upper intake manifold. Disconnect the fuel supply and return lines from the fuel rail, remove the fuel line bracket bolt, and detach the fuel line from the bracket. Disconnect the fuel injector wiring harness from each injector and set the harness aside. Remove all five fuel rail retaining bolts, disconnect the vacuum line at the fuel pressure regulator, and carefully lift the fuel rail up to detach the injectors from the intake manifold ports. Remove the injectors from the fuel rail by removing the injector retaining clip and pulling the injector out. Discard the injector retaining clips and O-rings, and install new ones on reassembly. Lubricate each new O-ring with clean engine oil and install them onto the injectors. Install the injectors onto the fuel rail and retain them with a new retaining clip. Install the complete fuel rail assembly onto the manifold, making sure the injector electrical connectors face outward. To replace the fuel pressure regulator, remove the ignition coil and upper intake manifold. Detach the vacuum line from the fuel pressure regulator and remove the snap-ring retaining the regulator to the fuel rail. Place a rag under the regulator to collect fuel spillage, then twist and pull it out of the fuel rail. Remove the O-rings from the regulator and install new ones in the correct order. Insert the regulator into the fuel rail and install the snap ring, ensuring it is fully engaged in the groove. Verify the installation by pulling on the regulator. The remainder of the installation is the reverse of removal. Turn the ignition On and check for fuel leaks.

To replace the throttle body, first, remove the air inlet duct and disconnect the wiring connectors from the Idle Air Control (IAC) valve and Throttle Position Sensor (TPS).

The air intake duct, engine cover, and on certain engines, the upper intake manifold should be removed.

The EVAP canister purge solenoid needs to be removed from the intake manifold.

After removing the intake manifold cover, the fuel system pressure needs to be relieved and the cable from the negative battery terminal needs to be disconnected.