What are the symptoms of a faulty EGR valve in a diesel car?

1 Answers
Aaron
07/30/25 2:29am
Diesel car EGR valve failure manifests as follows: 1. Introduction to EGR valve: The EGR valve, also known as the exhaust gas recirculation valve, is an electromechanical product installed on diesel engines to control the amount of exhaust gas recirculation in the intake system. It is a crucial component in the exhaust gas recirculation device. 2. Symptom one: The EGR valve is part of the exhaust gas recirculation system. When faulty, symptoms include extremely unstable idling or even stalling, flashing warning lights, failure to meet emission standards during annual inspections, oil burning, and blue smoke from the exhaust. 3. Symptom two: When the EGR valve remains constantly open, the car may exhibit black smoke emission, lack of power during acceleration, and increased fuel consumption.
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