What is the reason why the engine fault light of Guangzhou Honda 2.4 Accord is on?

1, poor combustion state: the poor combustion state of the engine is the main reason for the engine fault light. In automobile design, in order to ensure the engine in good working condition and normal working life, an oxygen sensor is designed and installed on the engine to monitor the combustion state of the engine. Once the engine is in a bad combustion state, it will cause fuel waste and excessive engine wear. ?

2. Engine knocking: the engine inhales the oil-gas mixture, and before the compression stroke reaches the expected ignition position, the oil-gas mixture ignites and burns itself due to various uncontrollable factors. At this time, the huge impact force produced by combustion is opposite to the direction of piston movement, which causes engine vibration, which is manifested by weak driving, excessive engine noise and even serious cylinder knocking.

Extended data:

Common engine faults:

1, engine abnormal noise: engine abnormal noise can be divided into cold car abnormal noise and hot car abnormal noise. The abnormal noise of cold car is mostly caused by the oil flowing back to the oil pan after the car has been parked for a long time. During cold start, the oil pump can't establish oil pressure at the first time to form an oil film, and the parts are not lubricated during cold start, resulting in abnormal noise.

2. Engine carbon deposit: The formation of carbon deposit is mainly due to incomplete combustion when the engine does work, and colloidal substances produced by impurities in fuel and engine oil during combustion will form carbon deposit over time. Carbon deposition will cause engine jitter of cold car, engine jitter at idle speed, power decrease and fuel consumption increase, which can be alleviated by users by removing carbon deposition.

3. The throttle is often dirty: the main reason why the throttle is dirty and has carbon deposits is that the air flows back and forth during the intake and exhaust of the engine during the working stroke. Not only will air be inhaled when intake, but the gas generated when the valves overlap will also flow back to the intake, resulting in carbon deposition. The user can clean the throttle valve.

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