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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- Discovery Sport/L550) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol >> Description And Operation >> Description >> Fuel Injector

Fuel Injector

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
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Four fuel injectors are located between the cylinder head and the fuel rail. The fuel injectors are sealed in the cylinder head with O-ring seals and held in position by the fuel rail.

The Powertrain Control Module (PCM) supplies the power and the ground for each fuel injector. Each fuel injector contains a solenoid operated needle valve, which opens when the solenoid winding is energized. While the needle valve is open, fuel is sprayed into the combustion chamber. The amount of fuel injected and the timing of the injection period is controlled by the PCM using data from other sensors.

If a fuel injector fails, the engine will suffer from unstable idle speed, poor Noise, Vibration and Harshness (NVH) and poor emissions performance. The Malfunction Indicator Lamp (MIL) in the Instrument Cluster (IC) will also be illuminated.

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