Chapter 169: Number Pattern

"I'll show you a simple inspection process, and how much you can learn is your creation. Song Guoyuan walked to the front of the car, and then waved Liu Liang to turn on the high beams and low beams.

Song Guoyuan gave a lecture in person, and Wang Hu and the others excitedly lined up around Song Guoyuan, standing as if they were caught in the welcome leader, and their respectful and solemn appearance almost applauded and shouted a warm welcome.

Liu Liang opened the main driver's door and sat inside, and after the power was turned on, two fan-like lights shot out.

The most critical moment finally came, Wang Hu and the others' hot eyes focused on Song Guoyuan, carefully observing his every behavior, and always ready to figure out the meaning of his every subtle movement, and strive to learn the real skills.

But Song Guoyuan, who was in full view of everyone, turned his head left and right, quickly looked around, and found that there was nothing unusual, and said to everyone: "Okay, there is no problem." ”

Immediately afterwards, Song Guoyuan motioned to Liu Liang again to turn off the car lights and asked him to turn on the wipers.

As the wipers began to dance on the dry front windshield, the fragile livers of Wang Hu and the others were as messy as the creaking sound.

The careful inspection that everyone was looking forward to, the long and serious explanation, the detailed comparative introduction, etc., did not appear at all, and Song Guoyuan only took a few seconds to say "Okay, no problem" to end the inspection of the headlights, which they did not expect.

Depressed, confused, and puzzled, all kinds of emotions churned in everyone's minds, and they were revealed through surprised expressions.

Song Guoyuan glanced at Wang Hu and the others, who were demented, and then looked at Fang Yuan with a slight smile.

Song Guoyuan didn't have any meaning to explain, Fang Yuan felt a little pity for his colleagues, and after coughing twice to pull everyone's souls back, he began to explain to his master: "My master also said just now, the inspection before the trip is different from the identification of the condition of the car. ”

"In the identification of vehicle condition, it is necessary to consider whether the headlights have been changed, whether they have been replaced, compare the newness of the lights on both sides, and judge whether there has been an accident from these aspects, or even as a basis for judging the age of the car. ”

"You don't need to think about these things when you do a pre-trip inspection, you only need to check whether the headlight groups are working properly, and they are all faulty, of course, there is no need to continue testing. Fang Yuan lowered his head and bent down and pointed to the headlight group, "Oh, by the way, at most, the headlights of some SUVs are not bright enough, and then decide whether to add an off-road light or something." ”

"Oops, I'll go. ”

"It's as simple as that?"

Wang Hu and the others looked at each other, all dumbfounded, they really didn't expect that the inspection process they had been looking forward to so much would be so simple.

But their hearts are very clear now, because Fang Yuan explained very clearly: it's just an inspection, and it's not the car dealer to collect the car, why is it so complicated?

Song Guoyuan still didn't say anything, his eyes were full of smiles when he looked at Fang Yuan, as if he was very satisfied with Fang Yuan's performance at this time.

Fang Yuan had already checked the situation of the Audi A4allroad with the primary identification skills of second-hand cars, and knew that there was no problem with his car, so Song Guoyuan checked the wipers and the front windshield, the rear gear, and all the door glasses were very fast, as if all the processes were ended with just a glance, and when Sun Yanming checked the glass, he looked at the frame number on the front windshield and the production date on all the glass.

Wang Hu and the others were not stupid, after Fang Yuan told them the difference between the car condition appraisal and the pre-trip inspection, he immediately understood that Song Guoyuan had ignored all the details, and there was no need to do these inspections.

Song Guoyuan did not check the body paint and A, B, C, D pillars, etc., under the gaze of everyone, stood on the right front wheel, and then stepped on the tire wall with his foot, muttering softly: "The tire pressure is a little low." ”

Fang Yuan's primary identification skills of second-hand cars do not have results on tire pressure, but he still knows some knowledge about tires.

Some of the models produced now can accurately display the real-time tire pressure of four tires on the instrument, and some are only equipped with a tire pressure alarm, which will not display the specific tire pressure value, and when the tire pressure is low, it will send a prompt to urge the owner to inflat.

As for those models that don't have tire pressure monitoring and no tire pressure alarm, it's a bit of a hassle.

Either step on the tire wall with your foot like Song Guoyuan, or buy a tire pressure gauge and install it yourself.

The method of stepping on the tire wall with your feet, there is no way to detect it accurately if you are not an experienced old driver, Fang Yuan thinks it is more reliable to buy a tire pressure gauge, after all, it is very economical to buy a tire pressure gauge.

The tire pressure gauge installed by yourself is external, built-in, and connected to the car, and the built-in one needs to be dynamically balanced, while the external one does not need to be done.

"You have to check the car carefully when you inspect it. Sun Yanming even squatted next to the tire and pointed to the pattern on it, signaling everyone to look here.

"Huh?" Song Guoyuan just now explained the headlights, wipers and car glass with a simple sentence, and now the abnormal reaction made everyone very curious.

Fang Yuan saw everyone's doubts and explained for Song Guoyuan: "The headlights and wipers, the car glass is broken, at most it affects driving, and if the tire fails, it will kill people, and the tragedy of the car losing control often occurs on the highway, that is, the tire has a problem." ”

"Oh, I see. Wang Hu and the others looked indifferent just now, and immediately became solemn, looking at Song Guoyuan seriously, looking forward to what he said next.

"Yes, Fang Yuan is very right, tires are indeed very important, more than 90% of car punctures are caused by lack of air, and others are punctured, tires are aging, but puncture accidents caused by excessive inflation are relatively rare, and there are many ways to detect tire pressure......" Song Guoyuan talked about some of the knowledge that Fang Yuan recalled just now, and continued, " If your car does not have a tire pressure detection, no tire pressure alarm, and you do not have a tire pressure gauge, and the tire fails halfway and you need to check the tire pressure, I will teach you a simple way to count the tire pattern. ”

"Count the tire patterns?" Wang Hu and the others came to Song Guoyuan, and even Fang Yuan stood behind Song Guoyuan curiously, looking at the place where he pointed his finger.

"Counting the tire pattern is a rough way to detect it. Song Guoyuan's fingers were inserted into the groove on the tire, "The rubber bulge next to it is the pattern of the tire, under normal circumstances, the number of contacts between the pattern and the ground should be six, if it exceeds eight patterns, it means that the tire pressure is already very low, if it is less than five, it means that the tire pressure is high." ”

Liu Liang squatted beside Song Guoyuan, pointed to the pattern on the side of the tire wall and began to count: "1, 2, 3...... Seven, which means that the tire pressure is a little low. ”

"Yes, if you find that the tire pressure has become low, when you use the inflator pump to inflate, you can also count the tire flowers as a standard, and when the six tire patterns touch the ground, it is almost the standard tire pressure. ”

"But not all tires are the same. Liu Liang raised his own question, he wanted to know what to do if he changed a type of tire.

"As I said, counting the tire pattern is a rough way to detect it. "It's a matter of human life, even Song Guoyuan, who has an eccentric personality, didn't get angry with Liu Liang, "You can pay attention to the number of tire patterns touching the ground in advance when you are at standard tire pressure, as your own standard." ”