Four Common Possible Faults in Fuel Delivery System of an Automobile

The fuel delivery system (FDS) is a critical part of an automobile. If not maintained properly, it can affect the engine's life. You need to be aware of the possible faults in the FDS so as to address the problem before it becomes a bigger issue. The common possible faults are pressure fluctuations, insufficient fuel supply, faulty injectors and electronic faults. Let's take a closer look at these faults and have some simple tips to avoid them.

1. Pressure fluctuations

• Leakage in fuel lines and the tank is a reason for low pressure in the supply line.
• Usage of low grade fuel in automobiles also causes low pressure in the lines, which is responsible for inadequate supply of fuel to the injectors.
• If the clamps, bends and rubber hoses are not assembled properly, there is a possibility of decreased pressure in the lines.

2. Insufficient supply

• Blockage of fuel lines by foreign bodies or bends in the lines is the common reasons for insufficient supply.
• An inadequate amount of fuel in the tank results in insufficient supply, and leakage in the lines can also reduce the supply to the engine's compartment and the injectors. Clogged or unclean filters block the supply to the engine when passing from the tank to the engine via the filters.

3. Faulty injectors

• Faulty injectors cannot spray the right amount of fuel to the combustion chamber.
• Fuel containing excess additives blocks the injector filters and affects their normal functioning the injectors badly. It obstructs the flow of fuel to the combustion chambers.
• An issue in injector coil winding is also one of the causes of the fault in the injectors.
• The nozzle of the injector should be in a good condition. Any leakage at the nozzle is problematic and leads to low performance.

4. Electronic faults in the FDS

• All modern automobile engines have a higher number of electronic components and this increases the probability of faults in electronic components like the sensors and the actuators.
• Sensors and actuators that are connected to Power Train Control Module (PCM) are more likely to have faults in wiring and connections between the sensors, etc.

Tips to avoid faults in the FDS

• Shut the fuel tank opening valve properly to maintain optimum pressure.
• Engage more clamps in fuel lines and use good quality filters.
• Check for clogged filters and clean them often. Replace filters at regular intervals.
• Use good quality fuel.
• Inspect the exterior parts of the engine regularly and replace the faulty parts.
• Contact authorized technician if the problem in FDS is a major one.