Excuse me, how to judge the car fault? What are the methods?

With the continuous improvement of people's living standards, the number of private cars is increasing, and how to judge the car failure has always been the most concerned topic. As the saying goes, "Know yourself and know yourself, and you will win every battle." If you want to give full play to your subjective initiative and actual level, and quickly judge the automobile fault, you can adopt the following three methods:

1. Judging automobile failure by "looking"

It seems that it is a very effective method to judge the fault, especially for the diagnosis of some phenomena such as slow acceleration, insufficient power and noise in the exhaust pipe. It is easier to find practical problems in time and give targeted solutions. When the above faults occur, the main form of instrument maintenance is to test the engine electronic control system with instruments, and then read the data and compare and analyze the data of air flow counting. If it is found that the air volume is less than the specified value, it means that there may be air leakage somewhere in the intake pipe. In fact, in the process of diagnosis, using traditional fault diagnosis methods can quickly "see" the problem: first, "see" whether the air intake system is blocked, and judge whether the oil supply system can work normally in the form of "seeing", so that the fault position can be directly determined, which is naturally more convenient and time-saving than the instrument inspection form.

2. Use the "measurement" method to judge the automobile fault.

It is a very simple diagnostic method to judge automobile faults through "measurement". What we call "measurement" here refers to the detection activities of using simple meters and instruments to detect the components and lines of the electrical system, and using scientific detection methods to inquire whether there is a short circuit or an open circuit in the circuit. Using instruments can better ensure the accuracy of test results, which is also a very representative method in traditional automobile fault diagnosis methods.

3. Use the method of "question" to judge the automobile fault.

Using the method of "problem" to judge automobile faults can better ensure the effect of real diagnosis activities. In this way, automobile fault diagnosis can effectively reduce the original diagnosis time. For a car, the person who knows it best is its driver. Therefore, it is very important to ask the driver for "first-hand information" in the process of formal diagnosis in the form of "question", and it is necessary to grasp the application of this method reasonably to achieve better troubleshooting effect.

4. Diagnose automobile faults in the form of "trial"

Compared with other traditional methods of automobile fault diagnosis, the method of diagnosing automobile fault in the form of "trial" is a little more complicated, so there are certain requirements for the professional level of maintenance personnel. Under normal circumstances, automobile fault diagnosis in the form of "trial" will take the following forms: First, in order to accurately find automobile faults and find their main problems, the fault will be simulated to find out the real cause of the fault. Secondly, in order to judge accurately, the suspected old parts will be replaced with new ones. Finally, repeat the test run, eliminate the automobile faults by troubleshooting, and confirm the specific reasons of the automobile faults in the test run, so as to solve them pertinently.