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About Maintenance

• 116.

  Are coolant flushes necessary?

  Coolant flushing is often recommended as part of routine vehicle maintenance. Over time, coolant can become contaminated with rust, scale, and other debris, which can affect its effectiveness in cooling the engine and preventing corrosion. Flushing the coolant system removes these contaminants, ensuring optimal performance and life of the cooling system components.
  Neglecting a coolant flush can lead to a variety of problems, such as overheating, corrosion of engine components, and reduced cooling system efficiency. In extreme cases, it can even cause engine damage.
  Coolant flush frequency may vary depending on the vehicle manufacturer's recommendations and the type of coolant used. Generally, a coolant flush is recommended every two to five years or every 30,000 to 100,000 miles, but always consult your vehicle's manual or a qualified mechanic for specific guidance.
  
• 117.

  How do I know if my particulate filter is clogged?

  A clogged particulate filter can cause a variety of symptoms in your vehicle. Here are some signs to watch out for:
  ① Check Engine Light: One of the most common signs of a clogged particulate filter is the illumination of the Check Engine Light (also known as the Malfunction Indicator Light or MIL). When the filter becomes overly saturated with soot or debris, it triggers the vehicle's onboard diagnostic system, causing the Check Engine Light to illuminate.
  ② Reduced engine performance: A clogged particulate filter can restrict exhaust flow, causing reduced engine performance. You may notice a decrease in the vehicle's power, acceleration, or overall responsiveness.
  ③ Increased fuel consumption: A clogged particle filter forces the engine to work harder to expel exhaust gas from the system. The increased workload will cause higher fuel consumption than normal.
  ④ Exhaust Smoke: A clogged particulate filter may cause excessive exhaust smoke, especially under acceleration or load. The smoke may be darker than normal and may have a noticeable odor.
  ⑤ Regeneration failure: Many modern vehicles equipped with a diesel particulate filter (DPF) or gasoline particulate filter (GPF) are equipped with a regeneration system to burn off accumulated soot and debris. If the particulate filter is severely clogged, regeneration may fail, causing a warning light to illuminate continuously or a message indicating a problem with the emissions system.
  If you notice any of these symptoms, it is important to have your vehicle checked by a qualified mechanic or technician as soon as possible. Ignoring a clogged particulate filter can cause further damage to your emissions system and potentially lead to costly repairs. A mechanic can diagnose the problem and recommend the appropriate treatment, whether it is cleaning, regenerating or replacing the particulate filter.
  
• 118.

  Does GPF require fluid?

  Gasoline particulate filters (GPFs) are primarily used to capture and reduce particulate emissions from gasoline-powered vehicles. Unlike diesel vehicles equipped with SCR systems, which require AdBlue (diesel exhaust fluid), petrol vehicles equipped with GPF generally do not require additional fluid to operate.
  However, it is important to note that the GPF requires periodic regeneration to burn off the accumulated particulate matter.This regeneration process usually occurs automatically under normal driving conditions when exhaust temperatures rise high enough to burn off trapped particles. Therefore, most gasoline vehicles equipped with GPF do not require a separate regeneration fluid.
  Nonetheless, it is vital to follow the manufacturer's recommendations for maintenance and servicing to ensure that the GPF system functions properly and complies with emissions regulations. If you suspect there are any issues with your vehicle's GPF, it is recommended that it be inspected by a qualified technician.
  
• 119.

  What happens if I disable AdBlue?

  Disabling the AdBlue system in vehicles equipped with Selective Catalytic Reduction (SCR) technology can have several consequences:
  ① Emission non-compliance: AdBlue is an important part of the SCR system, which helps reduce harmful nitrogen oxide (NOx) emissions in vehicle exhaust. Disabling the AdBlue system will result in increased NOx emissions, causing air pollution and environmental damage. In regions with strict emissions regulations, driving a vehicle with a disabled AdBlue system may result in legal consequences, fines, or even vehicle seizure.
  ② Engine performance issues: Modern diesel engines are calibrated to work with the AdBlue system. Disabling AdBlue may cause engine performance issues, including reduced power, reduced fuel efficiency and increased exhaust smoke.
  ③ Check Engine Light: Disabling the AdBlue system may trigger the vehicle's onboard diagnostic system, causing the Check Engine Light to illuminate. This may indicate a malfunction in the emissions control system and the vehicle may fail an emissions check or require repairs to correct the problem.
  ④ Warranty Void: Tampering with the emission control system (including disabling the AdBlue system) will void the vehicle warranty. If any related components fail or are damaged due to disabling the AdBlue system, the repair costs may not be covered by the manufacturer's warranty.
  ⑤ Long-term engine damage: Operating a vehicle with a failed AdBlue system will result in increased wear on engine components, which may ultimately lead to expensive repairs or premature engine failure over time.
  In summary, disabling the AdBlue system in vehicles equipped with SCR technology is not recommended for legal, environmental and mechanical reasons. The AdBlue system must be properly maintained to ensure compliance with emissions regulations, maintain engine performance and avoid potential legal and financial liabilities.
  
• 120.

  How do I know if my AdBlue injector is leaking?

  Detecting whether an AdBlue injector is leaking requires some observation and inspection. Here are some signs to look out for:
  ① Visible leaks: Check the AdBlue injector and surrounding area for visible signs of leaks. AdBlue is a clear, colorless liquid, so check for puddles or water droplets under the injector or along the AdBlue supply line.
  ② Strong Odor: AdBlue has a distinctive smell similar to ammonia. If you notice a strong smell of ammonia in the area around the injector, it may indicate a leak.
  ③ Low AdBlue level: Keep an eye on the AdBlue level in your vehicle's tank. If you notice a significant drop in the AdBlue level but no corresponding increase in mileage, this could be a sign of a leak in the injector or supply line.
  ④ Check Engine Light: A leak in the AdBlue injector or supply system can trigger the vehicle's onboard diagnostics system, causing the Check Engine Light to illuminate. If the Check Engine Light illuminates, the vehicle must be inspected by a mechanic to determine the cause.
  ⑤ Poor performance or efficiency: AdBlue injector leaks can affect the performance and efficiency of your vehicle’s emission control system. If you notice a drop in fuel efficiency or a loss of power, it could be due to an AdBlue system leak.
  If you suspect your AdBlue injector is leaking, it is important to address it promptly to prevent further damage to the emissions control system and ensure compliance with emissions regulations. A qualified mechanic or technician can inspect the injectors and repair any leaks found.