What Causes the Particulate Filter Blockage in the Sagitar?
2 Answers
GPF can capture particulate matter beyond the three-way catalytic converter, so after prolonged driving, a large amount of fine particulate matter accumulates on the GPF, eventually leading to blockage over time. Additionally, prolonged engine idling and stop-and-go city driving conditions can also cause GPF blockage. This is because the GPF operates at lower temperatures in these scenarios, preventing effective regeneration and creating a vicious cycle. Impact: When the GPF is blocked, it leads to poor exhaust flow, increased exhaust pressure, reduced vehicle power, and higher fuel consumption. Severe GPF blockage may even prevent the vehicle from starting normally. There are two types of particulate filters, with different handling methods for diesel and gasoline vehicles. Below are specific solutions for each type of particulate filter blockage: Diesel Vehicles: When the particulate filter in a diesel vehicle is blocked, park the vehicle and press the regeneration button on the central controller. The engine will automatically increase its speed, and after about ten minutes, the particulate filter will be cleaned. Gasoline Vehicles: For gasoline vehicles, shift to S mode and drive at higher speeds for a period to raise the exhaust pipe temperature. The particulate matter in the filter will then burn off, resolving the blockage issue.
Speaking of the Sagitar's particulate filter clogging, with decades of driving experience, common causes often relate to driving habits. For instance, daily commutes of just three to five kilometers are too short for the car to warm up sufficiently, preventing the particulate filter from automatically clearing carbon deposits. Or, consistently driving in slow, congested traffic keeps engine temperatures too low. Fuel quality is another factor—using substandard gasoline with high sulfur content can double particulate buildup after combustion, leading to quicker clogging. The system's regeneration function might also be interrupted, such as by turning off the engine mid-drive or frequent on/off operations disrupting automatic regeneration. Don’t underestimate this issue; excessive buildup can cause a spike in fuel consumption, reduced engine power, and trigger warning lights. Regularly taking the car on highways to fully warm it up or using fuel from reputable gas stations can effectively prevent this.
