Some seemingly malfunction problems are not fault at all. Today Xiaobian takes you to identify those seemingly false faults!

后排气管滴水

Rear exhaust pipe dripping water

正常行驶后排气管出现滴水情况相信很多车主都遇到过，看到这种情况车主们不禁有些慌神，担心是否添加了含水超标的汽油，那可是既耗油又损车啊。

After normal driving, the exhaust pipe drips. I believe many car owners have encountered this situation. When they see this situation, the car owners can not help but panic, worried about whether to add gasoline with excessive water content, which is both fuel consumption and car loss.

这可是杞人忧天，排气管滴水现象非但不是故障，反而是一个正常的好现象，因为当车辆在行驶过程中汽油燃烧非常充分时，完全燃烧后的汽油就会生成水和二氧化碳，当行驶结束后，水蒸气就会经过排气管后冷凝成水珠，顺着排气管滴下来，所以这种情况是大可不必担心的。

This is alarming. Dripping water in the exhaust pipe is not only a fault, but also a normal good phenomenon. When the vehicle burns gasoline sufficiently, water and carbon dioxide will be generated from the fully burned gasoline. After driving, water vapor will condense into droplets after passing through the exhaust pipe. With the exhaust pipe dripping down, there is no need to worry about this.

倒档出现“咣”的 响声

The sound of "bang" in reverse gear.

拥有手动变速箱的车，相信很多朋友都遇到过这样的情况，有时候挂倒档踩下离合器之后挂不上去，有时候又好挂。有时候稍微用力可以挂入，但是会伴随着“咣”的一声。不要担心，这种是正常的现象！因为一般手动变速器倒档是不配备前进挡所拥有的同步器，而且倒档的齿前面不是锥形的。这就导致了，齿圈挂入倒档齿“纯凭运气”。

With a manual transmission, I believe that many friends have encountered such a situation, sometimes hang upside down after stepping on the clutch, and sometimes hang well. Sometimes you can hang in a little effort, but it will be accompanied by a bang. Don't worry, this is a normal phenomenon. Because generally manual transmission reverse gear is not equipped with forward gear synchronizer, and the front of reverse gear teeth is not conical. This leads to the gear ring hanging into the reverse gear "pure luck".

运气好，齿圈的齿和倒档的齿在一个位置，就容易挂。偏一点，用力可以挂入，但会有响声，偏多了，就挂不进去。遇到挂不进去的情况，建议先挂入前进档动一下车子，然后再踩离合器，挂倒档，万万不能着急，用“暴力”解决。

With luck, the teeth of the ring gear and the reverse gear are easy to hang up in one place. A little bit, force can be hung in, but there will be a lot of noise, it will not hang in. In case of not being able to hang in, it is suggested that the car should be put in the front gear to drive, then the clutch should be stepped on and the reverse gear should be hung up. Never be in a hurry, but use "violence" to solve the problem.

车身护板有“油迹”

There is "grease mark" on the body guard plate.

有些车子，当举升机举起来看底盘时，可以看到在车身护板的某处，有一处明显的“油迹”。其实那不是油，而是车子出厂的时候，在车身底部涂的一层保护蜡。在使用车子的时候，这些蜡，受热融化，就形成了一处不容易干的“油迹”遇到这种情况，不用管，也不必去花心思把那些融化的蜡弄掉，没有任何影响！

In some cars, when the lift is lifted to look at the chassis, you can see an obvious "oil mark" somewhere in the body guard plate. In fact, it was not oil, but a protective wax coated on the bottom of the car when the car was out of the factory. When using the car, these waxes melt by heat, forming an "oil stain" which is not easy to dry. When this happens, you don't have to take care of it, and you don't have to take the pains to get rid of the melted wax. It has no effect at all! uuuuuuu

倒车并挂入倒挡时踩下离合后倒挡却无法挂入

When reversing and hanging in the reverse gear, it can not be hung when the clutch is closed.

驾驶手动挡的汽车，相信大部分的朋友都遇过这样的情况，在车辆需要倒车并挂入倒挡时踩下离合后倒挡却无法挂入，但很多时候倒挡的挂入并无任何困难，也有时只需稍微用力便可应声“挂入。因为一般手动变速器倒挡没有配备前进挡所拥有的同步器，并且倒挡齿的前端不是锥形的，这样导致从前进挡换到倒车挡时就会有种碰运气的感觉，当挂挡时机正确，挂挡齿轮与倒挡的齿在同一位置时就会相当顺利。

Driving a hand-gear car, I believe most of my friends have encountered such a situation, when the car needs to reverse and pull into reverse, it can not be pulled into reverse after stepping on the clutch, but in many cases there is no difficulty in the reverse of the car, and sometimes only a little effort can be used to "pull in". Because the reverse gear of manual transmission is not equipped with the synchronizer of the forward gear, and the front end of the reverse gear is not conical, so there will be a sense of luck when shifting from the forward gear to the reverse gear. When the timing of the shift is correct, the gear and the reverse gear will be in the same position smoothly.

车辆有噪声

Vehicle noise

无论是高档车。低档车。进口车。国产车。新车。旧车都存在不同程度的噪声问题。车内噪声主要来自发动机噪声。车身共振悬架噪声及胎声等五个方面。车辆行驶中，发动机高速运转，其噪声通过防火墙。底墙等传入车内；汽车在颠簸路面行驶产生的车身共振，或高速行驶时开启的车窗不能产生共振都会成为噪声。

Whether it's a high-end car. Low gear. Imported cars. Domestic car. A new car. There are different degrees of noise problems in old cars. Vehicle noise mainly comes from engine noise. The five aspects of the body resonant suspension noise and tire noise. When the vehicle is running, the engine runs at high speed, and its noise goes through the firewall. Bottom walls, etc. are introduced into the car; the body resonance caused by the car running on bumpy roads, or the resonance caused by the window opening at high speed will become noise.

由于车内空间狭窄，噪声不能有效地被吸收，互相撞击有时还会在车内产生共鸣现象。行驶中，汽车的悬架系统产生的噪声以及轮胎产生的噪声都会通过底盘传入车内。悬架方式不同。

Because of the narrow space in the car, the noise can not be absorbed effectively, and sometimes the collision will produce resonance phenomenon in the car. During driving, the noise generated by suspension system and tire will pass into the vehicle through the chassis. Suspension modes are different.

轮胎的品牌不同。轮胎花纹不同。轮胎气压不同产生的噪声也有所区别；车身外形不同及行驶速度不同，其产生的风噪大小也不同。在一般情况下，行驶速度越高，风噪越大。

The brand of tyres is different. The tread patterns are different. The noise produced by different tire pressure is also different; the size of wind noise produced by different body shape and driving speed is also different. In general, the higher the speed, the greater the wind noise.