Fuel Injector: Description and Operation

Injectors
The injectors are of the solenoid type with needles and seats and open when current flows through them and close by means of a powerful spring when the current is broken.

To obtain the best possible combustion and therefore cleaner exhaust gases, the injectors are provided with four holes which ensure good fuel distribution.

The fuel jets are very precisely set (two jets on each intake valve). This makes the fixing of the injectors very important. To ensure that this is done properly, the injectors are fixed in pairs in special mounts between cylinders 1-2 and cylinders 3-4.

The injectors receive their voltage from the main relay, while the ECM grounds the injectors as follows:
^ valve 1 receives ground from pin 3
^ valve 2 receives ground from pin 4
^ valve 3 receives ground from pin 5
^ valve 4 receives ground from pin 6