What are the reasons for the Roewe i5 engine emission failure?

1 Answers
DiPreston
07/30/25 8:36am
Reasons for the Roewe i5 engine emission failure: Decreased engine performance. The following are the causes of reduced engine performance: 1. Clogged catalytic converter: A clogged catalytic converter can lead to poor exhaust flow, reduced power, and increased fuel consumption. In severe cases, it may cause engine shaking or even stalling. 2. Dirty air filter: A dirty air filter can result in insufficient air intake, reducing the car's power and increasing fuel consumption. More importantly, it can directly cause the throttle valve to become dirty and accumulate carbon deposits. 3. Faulty spark plugs: Faulty spark plugs can cause the car to idle roughly, significantly reduce power, and increase fuel consumption. 4. Carbon deposits on fuel injectors: Carbon deposits on fuel injectors can lead to insufficient engine power, rough idling, difficulty starting, and increased fuel consumption. The main causes of clogged fuel injectors are carbon deposits from the engine or impurities in the fuel. 5. Carbon deposits on the throttle valve: Carbon deposits on the throttle valve are a major factor affecting its operation. Not cleaning the throttle valve for a long time can cause errors in its opening angle and allow air with impurities to enter the engine cylinders, leading to abnormal engine operation.
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