For the new car owner, the first time they encounter dripping, smoking, and blasting of the exhaust pipe are generally at a loss. They do not know what's wrong with the car. Exhaust pipe can often reflect the running status of the engine, so it is very necessary to pay attention to the exhaust pipe. However, in the exhaust pipe, some of the conditions are not faulty, and some need the attention of the owner, how to judge the specific, everyone The car teaches you to solve some minor problems with the car exhaust tube!

1, exhaust pipe dripping

Many new car owners see a lot of tension when they see a drip of water under the exhaust pipe. The old drivers are very calm. The car is prompted by the owner. Because the drip pipe is not an automobile fault, it is the performance of the car engine. .

The drain pipe does not mean that the drip is dripping, but it must meet the following conditions: correct oil and gas mixture, normal engine cylinder pressure and normal exhaust temperature. Gasoline and carbon dioxide are generated after complete combustion of gasoline. The water droplets discharged from the exhaust pipe are the result of the condensation of the steam generated after the combustion of gasoline in the exhaust pipe and the muffler. However, when the ambient temperature is high, water vapor can be trapped. Direct evaporation, but the lower temperature will flow out with the exhaust. This phenomenon is ubiquitous in cars with better engine performance. Do not worry.

But this is not to say that the more water droplets the better, the excessive water in the exhaust cylinder will damage the oxygen sensor in the three-way catalytic converter. The main role of the oxygen sensor is to monitor the oxygen content in the exhaust gas to form an electrical signal, which is based on oxygen The electrical signal fed back by the sensor determines the air-fuel ratio and adjusts the fuel injection rate so that the engine maintains the optimum air-fuel ratio.

2, the exhaust pipe smoke

The exhaust pipe exhausted gas should be colorless, but if you see the exhaust pipe emits white smoke / smoke / blue smoke, everyone car to remind the majority of owners here need to be vigilant, because the exhaust pipe smoke It is very likely that the engine has failed.

If you only take a little white smoke in the winter, it is usually only condensation steam, which is normal. However, if it is a large number of white smoke, it is due to engine cylinders and waterways drowning. Cooling water enters the engine interior and is heated to cause water vapor to escape. At this time, the engine is at high temperature and acceleration is weak, which may cause serious damage to the engine.

If it is to take blue smoke, many car owners may know that this is caused by the oil intrusion into the engine, which is commonly known as "burner oil." At this time, the engine's accelerating ability will be reduced, noise will be louder, and if it takes a long time, it will wear out the cylinder wall and in severe cases it will damage the entire engine.

Everyone car reminds the majority of owners, exhaust pipe black smoke is more common, indicating that the fuel combustion is not complete, the engine internal failure, but its relatively more causes, such as the cylinder pressure is insufficient, the ignition time is not right, the engine temperature is too low And so on, system repairs are needed to solve the problem.

3, exhaust pipe "shot gun"

Exhaust pipe "spray" is due to insufficient combustion of the oil and gas mixture from the cylinder into the exhaust system, the detonation of the explosion occurs when the high temperature occurs, the cause of the mixing with the cylinder gas concentration is too high / too low Relationships are too high to let off the sound of artillery, and if they are too low, they will be tempered. In addition, everyone car tips: ignition timing misalignment will also make it not fully burned, and then into the exhaust system, the emergence of fire. Shooting will reduce engine power, increase fuel consumption, and may also damage the exhaust system.


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