Should the Fuel Injector Be Cleaned?

[SavannahAnn]

Fuel injectors need to be cleaned. Long-term neglect of fuel injector cleaning in car engines can lead to excessive carbon deposits, affecting vehicle performance. A fuel injector is essentially a simple solenoid valve. When the electromagnetic coil is energized, it generates suction, lifting the needle valve to open the injection hole. Fuel is then sprayed at high speed through the annular gap between the needle valve head and the injection hole, forming a mist that facilitates complete combustion. Here are the steps for cleaning fuel injectors: 1. Remove the fixing screws of the fuel rail; 2. Gently shake and remove the fuel rail to avoid damaging the injector seals; 3. Ensure the battery negative terminal remains disconnected; 4. Detach the fuel injector from the fuel rail; 5. Connect the injector to a homemade injector plug and wire; 6. Use the pressure of carburetor cleaner to simulate the fuel supply pressure during actual operation; 7. Always keep the wire connected to the positive terminal of the battery; 8. Simulate the injection state by contacting the wire with the negative terminal while using carburetor cleaner to achieve cleaning; 9. Clean the injector head; 10. Reinstall the fuel rail, paying attention to the position of the injector clips and seals.

[MacAna]

As someone who has been driving for over twenty years and frequently works on car repairs, I believe fuel injector cleaning is quite important. The fuel injector is responsible for spraying fuel into the engine. Over time, oil residue or carbon buildup can cause clogging, leading to poor acceleration, increased fuel consumption, or even difficulty starting the engine. Generally, it should be inspected and cleaned every 20,000 to 30,000 kilometers, especially in China where fuel quality can sometimes be unstable, making issues more likely. Cleaning methods range from simple solutions like adding fuel system cleaners to the gas tank to professional removal and cleaning. Neglecting this maintenance can affect engine performance and significantly increase repair costs. Regular cleaning ensures smooth injector operation, resulting in stable driving and better fuel efficiency—it's a routine part of car maintenance that shouldn't be overlooked.

[GideonAnn]

As an average car owner with over five years of driving experience, I recently noticed my vehicle shuddering during acceleration and consuming more fuel. Suspecting a fuel injector issue, I spent just over 300 yuan to have them cleaned. The result was remarkable – the car runs smoother now, and fuel consumption dropped by nearly 1L per 100km. The cleaning process was straightforward; the technician used specialized equipment to flush them quickly. It's easy to overlook such maintenance details, but minor issues accumulate over time, leading to problems like cold-start difficulties or excessive emissions. Now, I proactively clean them every 30,000 km, which has kept my car in excellent condition. I highly recommend other drivers not neglect this simple yet effective maintenance task.

[Amber]

From a cost-saving perspective on fuel injector cleaning: A single cleaning costs approximately 200-500 RMB, but not cleaning may lead to increased fuel consumption. For example, a 10% increase in fuel consumption could result in over a thousand RMB in additional annual fuel costs for driving 20,000 kilometers. Long-term neglect may even lead to more expensive engine overhauls. It is recommended to address the issue when symptoms appear, as the benefits outweigh the drawbacks, and to choose an appropriate time for cleaning.