Can the EGR valve of a National IV diesel vehicle be removed?
3 Answers
National IV diesel vehicles cannot operate without the EGR valve, as it affects the vehicle's exhaust emissions. Without it, emissions will not meet the standards, and the vehicle will fail the annual inspection. Here is some additional information: The EGR valve is an electromechanical product installed on gasoline engines to control the amount of exhaust gas recirculated back into the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and is connected to the exhaust manifold via a short metal pipe.
As an auto repair technician, I often encounter similar issues. The EGR valve of China IV diesel vehicles should not be removed arbitrarily, as it is the core component of the exhaust gas recirculation system, used to reduce harmful substances in exhaust emissions. Removal may lead to severe engine carbon buildup, decreased power, increased fuel consumption, and even trigger the malfunction indicator light. During repairs, I've seen many car owners who modified their vehicles privately end up with their cars breaking down, and failing emission tests during inspections, requiring costly repairs and wasting time and money. I recommend regular maintenance and inspection to keep the valve clean, and not to resort to improper modifications. Safety and environmental protection should always come first.
Having driven diesel vehicles for over a decade, I fully understand the importance of the EGR valve. The China IV emission standards strictly require emission control. If removed, the vehicle will emit black smoke, not only polluting the air but also risking fines from traffic police. I personally experienced severe engine vibration and a 30% surge in fuel consumption after a modification, ultimately costing a fortune to fix. In daily driving, this component is far from decorative—keeping it in its original condition ensures both peace of mind and fuel efficiency. Never attempt removal out of curiosity or to save money, as even repair shop technicians advise against tampering with it.
