Malfunctioning Injection Nozzles: Identifying Symptoms, Cleaning, and Repair Expenses
In the world of automotive engineering, car injection nozzles play a crucial role in modern engines. These nozzles, which were initially used only in diesel engines of old vehicles, have since become commonplace in both petrol and diesel engines of modern cars.
Modern engines use injection nozzles to finely regulate the injection quantity, thereby reducing consumption and emissions. This makes them an essential component in maintaining the efficiency and performance of a vehicle.
It's important to always use the recommended fuel and change the fuel filters according to the manufacturer's instructions to ensure the longevity of the injection nozzles. Contaminated or poor-quality fuel can clog the very fine injection holes and damage the nozzles over time.
If your car experiences a significant change in fuel consumption and a simultaneous loss of engine power, a defective injection nozzle may be the culprit. A malfunctioning nozzle can also cause further damage to the engine, particulate filter, or catalyst.
Injection nozzles can wear out over time, with most nozzles lasting up to around 160,000 km, but they can also wear out faster depending on the engine and the injectors used. Depending on the case, cleaning a single injector may not be cost-effective, as the cost of cleaning might exceed the cost of a new injector.
Cleaning or replacing the microfilter mounted over the injectors can help in maintaining the nozzles' efficiency. In some cases, depending on the engine and the injectors used, the injectors can be cleaned in an ultrasonic bath.
From the mid-1960s, sports cars started using mechanical injection with corresponding valves instead of carburetors. Since the mid-1980s, injection nozzles have been increasingly used as central injections and direct injections for diesel engines.
However, deposits can still impair the spray pattern of the nozzles, leading to inefficient fuel consumption and increased emissions. Regular maintenance and timely cleaning or replacement of the nozzles can help mitigate these issues.
Lastly, it's worth noting that the main companies manufacturing fuel injectors for modern cars include Bosch, L’Orange, Delphi, Denso, Marelli, and Continental. If you suspect a problem with your car's injection nozzles, it's advisable to consult a professional for a thorough inspection and any necessary repairs. In the event of an engine control light illuminating in the cockpit, it's a clear sign that there's a problem with the injection system that requires attention.
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