Disconnect wiring harness -1- from fuel rail. Remove screws -arrows- from fuel rail. Carefully pull fuel rail with injectors upwards. Disconnect connectors at injectors.
Parts and assemblies of the MPI injector
1. O-ring (lightly lubricate with clean engine oil when installing) - replace
2. Nozzle
3. Mounting bracket
4. O-ring (lightly lubricate with clean engine oil when installing) - replace
Installation
Replace the O-rings of the injectors. Lubricate O-rings lightly with clean engine oil before installation. Connect connectors to injectors. By hand, press the fuel rail with injectors into (fat-free) hole in the intake manifold.
Installation in reverse order. Install the fuel rail.