Location of components
| Item name | Spare part number | Description |
| 1 | - | Electronic throttle body |
| 2 | - | inlet pipe |
| 3 | - | Pipe for connecting fuel rails |
| 4 | - | Intake manifold |
| 5 | - | Right fuel rail |
| 6 | - | Fuel supply pipe |
| 7 | - | fuel injector housing |
| 8 | - | nozzles (8 pcs.) |
| 9 | - | Left fuel rail |
General information
The main components of the fuel injection system are the intake manifold, fuel pump, fuel rails and eight injectors. The fuel pump delivers fuel at constant pressure from the tank to the fuel rail through a tube running along the gearbox. The fuel rail distributes fuel evenly across all eight injectors. Fuel injectors controlled by the ECM are installed in the fuel rails on each side of the intake manifold. The two fuel rails are interconnected by a tube laid in front of the manifold. To check the fuel pressure during maintenance, a Schrader valve is provided in the rail.
Intake manifold
The composite intake manifold is located at the top of the engine between the two cylinder banks. The manifold contains a central receiver, from which eight inlet pipes go to each cylinder. The intake manifold is attached to the cylinder heads with 10 bolts.
Rubber gaskets installed in the intake manifold channels seal the joints between the channels and cylinder heads. For more information, please refer to Intake Air Distribution and Filtering (303-12B)
Fuel pump
A submersible electric fuel pump is mounted on the inner chassis of the tank at the bottom of the receiving cup with a tangential channel. The fuel pressure regulator, which controls the fuel pressure in the fuel supply line that supplies fuel to the fuel rail, is located in a pipe located inside the fuel tank. For more information refer to Fuel Tanks and Lines (310-01B)
Throttle body
The electronic throttle body, located on the intake manifold, is designed to control engine torque. Its main components are electronically controlled throttle, accelerator pedal position sensor (APP) and engine control unit (ECM).
The accelerator pedal position sensor is designed to determine the driver's requirements for engine power (by adjusting the throttle position). The accelerator pedal position signal is sent to the engine control unit (EMS) and is used to control the throttle position using the built-in electric drive. Sensors installed in the throttle body determine the position of the damper and the rate of change of its position. For more information refer to Electronic Engine Controls (303-14B)
Inlet pipe
The intake manifold connects the electronic throttle body and the intake manifold. On the inlet pipe there are vacuum sampling points, which are used to control various systems. The tide at the rear of the pipe is designed to install an exhaust gas recirculation valve (EGR).
Fuel rail
| Item name | Spare part number | Description |
| 1 | - | Right fuel rail |
| 2 | - | Pipe for connecting fuel rails |
| 3 | - | Fuel temperature sensor |
| 4 | - | Fuel supply pipe |
| 5 | - | Fuel Line Quick Connector |
| 6 | - | Fuel pressure accumulators |
| 7 | - | Left fuel rail |
| 8 | - | nozzles (8 pcs.) |
Each fuel rail maintains a constant fuel pressure of 4.5 bar (0.45 MPa). Each fuel injector housing has four injectors connected to the fuel rail. O-rings are used to seal the injectors in the fuel rail and in the intake manifold. A Cooper quick connector is used to connect the fuel feed line to the left fuel rail.
A fuel pressure accumulator is attached to each fuel rail, and a schrader valve is mounted at the front end of the left fuel rail. It allows you to check the fuel pressure during service.
Fuel pressure accumulator
A fuel pressure accumulator is attached to the center of each fuel rail. The accumulators act as dampeners, smoothing out the pulsations created by the pump and ensuring a constant fuel pressure in the rails and injectors.
Fuel temperature sensor
The fuel temperature sensor is located at the rear of the right fuel rail. The NTC sensor is connected to the ECM by two wires. For more information refer to Electronic Engine Controls (303-14B)
Nozzles
Eight fuel injectors with 12 nozzles and top fuel supply are installed on the fuel rails. Each nozzle is sealed with two O-rings, which should be replaced with new ones whenever the nozzle is removed. To facilitate installation, the O-rings can be lubricated with a small amount of engine oil. Do not use any other type of lubricant. The injectors deliver fuel to the rear of the intake valves.
The injectors and solenoid valves are controlled by the ECM. When the power supply to the electromagnetic winding of the nozzle is interrupted, the needle locks the atomizer. Power is supplied to the injector coil through the main relay and the ground circuit is connected through the ECM. The injector is unlocked and locked by applying and disengaging the ECM ground. When the injector is open, fuel is sprayed into the intake manifold on the back of the intake valves. The ECM regulates the amount of fuel delivered by the duration of the injector opening. For more information refer to Electronic Engine Controls (303-14B)
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