Chevrolet 17112933 Tbi Throttle Body Kit

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When replacing parts of the throttle body/injector assembly, first relieve fuel system pressure and disconnect the negative battery terminal. Remove the throttle body by disconnecting the electrical connector and fuel lines. Drain the cooling system, remove the air intake duct, resonator, and fuel meter body by detaching connectors, vacuum hoses, and the accelerator cable. To remove the upper intake manifold, take out the ignition coil/module assembly, EVAP purge valve, and then detach the manifold. Poppet nozzles are removed by squeezing tabs, and the fuel injector can be pushed out after removing its hold-down plate. The fuel pressure regulator is removed by taking off its clip. During installation, replace and lubricate O-ring seals, press the injector into the throttle body, install the hold-down plate, and snap poppet nozzles into place. Check for fuel leakage post-installation.

The air cleaner should be reinstalled, and all hoses should be returned to their original positions.

The upper intake manifold and fuel meter body can be removed by taking out the ignition coil/module assembly and EVAP purge valve, and then carefully removing the upper intake manifold.

Be careful of hot or moving engine components while checking for a vacuum leak.