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Engine gas (EngIne Backfire) refers to the explosion phenomenon caused by the reverse flow of the unburned mixed gas in the combustion chamber back to the air intake system and Binance appre-ignition. Gas is a very dangerous phenomenon, which will not only cause mechanical damage, but also pose a threat to the safety of the driver. This article will introduce the causes, effects and solutions of engine gas. I. The reason for the engine gas 1. Air-fuel ratio is too poor or too thick air-to-fuel ratio refers to the ratio of fuel and air mixed in the combustion chamber. Air combustion is more poor or too thick, which may cause engine problems with gas. When the air-combustion ratio is too poor, the mixed gas is too dry, which is easy to cause ignition delay or ignition failure. When the air-fuel ratio is too thick, the mixed gas is exhausted before it is completely burned out. At this time, the fresh air entering the combustion chamber will push the unfueled oil vapor back into the airway, resulting in the phenomenon of gas stringing.Two. Ignition system failure Ignition system failure is also a common cause of gas string phenomenon. A poor ignition system may cause sparks to appear at the opening of air and mixed gas instead of being placed on the spark plug, causing the combustion gas to regress, resulting in a string of gas. 3. Inlet valve failure The failure of the intake valve is also another common cause of gas. If the intake valve is not completely closed or opened at the appropriate time, it will allow the high-pressure gas in the combustion chamber to enter the intake channel. These high-pressure gases may generate regressive pressure, pushing the unburned fuel mixture back into the intake airway, resulting in gas sing. II. Affecting the engine will not only affect the engine, but also pose a threat to the driver. The following are some effects of string gas: 1. Damage to the engine will cause great damage to the engine.Bad, because this phenomenon will lead to the formation of regressive pressure, causing the fine parts in the combustion chamber to be vibrated or even seriously damaged. Two. Reduce the performance of the engine because the gas phenomenon prevents the power from moving forward, so it will reduce the organizational structure and performance of the engine. When starting or accelerating on the ramp, gas may make it difficult for the engine to work, causing the vehicle to accelerate slowly or underaccelerately. 3. Engine gas that harms the driver's safety will also directly affect the driver's safety. When gas occurs, sparks will be emitted from the air intake system, which may cause fire or spontaneous combustion, which will be very dangerous and unsafe. III. Solutions When you encounter the problem of gas, you need to take some solutions to avoid further damage. 1. Check the ignition system. Because the ignition system problem is the most common cause of gas, checking the ignition system and ensuring its normal operation is one of the best solutions.You can check whether the ignition module, spark plug and wiring are correct, and repair or replace these parts when needed. Two. Checking the air filter and replacing the air filter is also a good way to prevent gas flow, because dirty air filters may cause insufficient air flow, making the air-fuel ratio too thick, resulting in gas flow. 3. It is also very important to check whether the air intake valve is working properly. You can check whether the air intake valve is completely closed and clean up any substance that blocks it. Four. Check whether the air-fuel ratio is correct. The air-fuel ratio can prevent the occurrence of gas stringing. You can use the OBD diagnostic tool to check and adjust the air-fuel ratio. 5. Cleaning and replacing flammable materials. In order to prevent the phenomenon of gas, you can also clean or replace flammable materials, such as oil, gasoline, engine coolant, etc. In short, gas may have a negative impact on the engine and pose a threat to the safety of the driver.Therefore, when you encounter a gas problem, you should take the initiative to take measures to solve it. Some of the solutions mentioned above are key measures to prevent gas. In order to ensure the safety of drivers and the stability of the vehicle, we must pay attention to and solve this problem.

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