How Bad Habits Could Cause Diesel Pump Issues

Diesel-engined vehicles are known for their reliability and can be expected to last a long time with care and attention. However, issues can certainly arise, especially with the fuel delivery system, so it pays to know how this works and how to avoid any future breakdown. What should you be on the lookout for?

Pumping System

Most modern vehicles of this kind feature an 'in the tank' pump as part of a fuel delivery system. This type of arrangement is felt to be much more efficient as it can deliver the right amount of fuel under the correct pressure for the modern, sophisticated engine.

Adequate Lubrication

Most of the time, this type of pump will work without issue, but it is nevertheless important to ensure that you keep a sufficient amount of fuel in the tank at all times. This is because many pumps are designed to work best if an adequate amount of lubrication is provided by the diesel fuel itself. If there's not enough of this fuel in the tank or if you tend to wait until the last minute to refuel, then the bearings within the pump could be adversely affected. They may begin to wear out, and the pump may not be able to provide the right amount of pressure when the engine is under load. In this case, you may notice that the car is hesitant when you are trying to overtake a slower vehicle and may tend to 'spit' instead.

Clogged Injectors

It is never a good idea to empty out your tank as there will invariably be some residue at the bottom. This may be composed of tiny particles of rust or impurities that may find their way into the fuel, but this can cause a serious issue if it is sucked into the fuel pump itself. These impurities will make their way into the engine and could clog the fuel injection system. In the worst-case scenario, they may jam the injector in the open position, and this could cause an engine overrun, performance difficulties and even engine damage.

What to Do Next

If you suspect that your pump may have seen its better days or that your injection system may be dirty or clogged, then you may need to replace the damaged parts. However, you should always ensure that you get the best-quality replacement parts and make sure that you alter your bad habits in the future if needed to avoid any repeat.

To learn more about diesel vehicles, contact a company such as a Bosch-authorised diesel dealer.

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