There are many steps in the daily maintenance of a vehicle. In fact, the owner can complete them by himself, such as checking the tire grinding, etc. Do it yourself is convenient, fast, easy and more economical. Jinan Benz auto repair factory knows a little simple technology, and then with basic tools, smart drivers can independently complete the basic maintenance of vehicles.

1、车辆的排气管排出蓝色的烟雾：

1. The exhaust pipe of the vehicle emits blue smoke:

故障判定：真故障。

Fault determination: true fault.

原因分析：

Cause analysis:

是由于大量机油进入气缸，而又不能完全燃烧所致。拆下火花塞，即可发现严重的积炭现象。需检查机油尺油面是否过高;气缸与活塞间隙是否过大;活塞环是否装反;进气门导管是否磨损或密封圈是否损坏;气缸垫是否烧蚀等，必要时应予以修复。

It is due to a large amount of oil into the cylinder, and can not completely burn. When the spark plug is removed, serious carbon deposit can be found. It is necessary to check whether the oil level of the oil dipstick is too high; whether the clearance between the cylinder and the piston is too large; whether the piston ring is installed reversely; whether the intake valve guide is worn or the sealing ring is damaged; whether the cylinder gasket is ablated, etc., and repair it if necessary.

2、排气管冒黑烟：

2. Black smoke from exhaust pipe:

故障判定：真故障。

Fault determination: true fault.

原因分析：

Cause analysis:

表明混合气过浓，燃烧不完全。主要原因是汽车发动机超负荷，气缸压力不足，发动机温度过低，化油器调整不当，空气滤芯堵塞，个别气缸不工作及点火过迟等。排除时，应及时检查阻风门是否完全打开，必要时进行检修;熄火后从化油器口看主喷管，若有油注出或滴油，则浮子室油面过高，应调整到规定范围，拧紧或更换主量孔;空气滤清器堵塞，应清洗、疏通或更换。

It shows that the mixture is too rich and the combustion is incomplete. The main reasons are that the engine is overloaded, the cylinder pressure is insufficient, the engine temperature is too low, the carburetor is not adjusted properly, the air filter is blocked, some cylinders do not work and the ignition is too late. When removing, check whether the choke valve is fully opened in time, and carry out maintenance if necessary; after flameout, look at the main nozzle from the carburetor port, if there is oil injection or dripping, the oil level of the float chamber is too high, it should be adjusted to the specified range, and the main metering hole should be tightened or replaced; if the air filter is blocked, it should be cleaned, dredged or replaced.

3、车辆排气管冒白烟，冷车时严重，热车后就不冒白烟了：

3. White smoke is emitted from the exhaust pipe of the vehicle, which is serious when the vehicle is cold, and no white smoke is emitted after the vehicle is hot

故障判定：假故障。

Fault determination: false fault.

原因分析：

Cause analysis:

这是因为汽油中含有水分，而发动机过冷，济南奔驰汽修厂认为此时进入气缸的燃油未完全燃烧导致雾点或水蒸气产生形成白烟。冬季或雨季当汽车初次发动时，常常可以看到排白烟。这不要紧，一旦发动机温度升高，白烟就会消失。此状况不必检修。

This is because the gasoline contains water, and the engine is too cold. Jinan Benz automobile repair factory thinks that the fuel entering the cylinder is not completely burned at this time, resulting in fog or water vapor forming white smoke. In winter or rainy season, when the car starts for the first time, white smoke can often be seen. It doesn't matter. Once the engine temperature rises, the white smoke will disappear. This condition does not need to be repaired.