In 1992, a small village owner became the richest man in the village by owning a car.

Chapter 147 A Car Can Be Repaired Like This?
On top of the Kobelco excavator, Zhang Shuangxi's face still showed hesitation.

"Mr. Zhang, trust us, it must be a problem with the engine. Otherwise, we'll put it back together exactly as we took it apart." Master Song played a little trick.

Whether they find the problem or not, whether they take it apart or put it back together, these two technicians can at least guarantee to earn a service fee.

This is why even if other master mechanics can't figure out what's wrong, they'll still replace some parts. If you don't know anything and just say, "My skills are limited, I can't tell," you'll most likely be sent back, and then you'll have no face to ask for money.

Especially someone as generous as Zhang Shuangxi, as long as he demolishes, repairs, or replaces something, he can always get some compensation before leaving.

"Alright then, I'll have to trouble you two masters." Zhang Shuangxi finally gave in, a resolute smile on his face as he looked at Master Song and Master Wang.

Masters Song and Wang exchanged a glance, their hearts brimming with joy. It was as if the author had successfully signed a guaranteed-payment novel contract and would no longer have to worry about not making money on a trip.

"Wait a minute." Yu Dawei got up from beside the engine. He couldn't stand it anymore and sincerely said to Zhang Shuangxi, "Brother Zhang, if you want to see if there is a problem with the engine, you don't actually need to take it apart. Just try it out a little."

"You can tell?" Zhang Shuangxi looked at the young man with some surprise.

From the moment he arrived, he hadn't held much hope for this young Master Xiao, but when the sunlight under the blue sky shone on the young man's young and sincere square face, he hesitated for a moment.

"What can you possibly find out? You're not planning to dig up dirt on the ground, are you?" Master Wang scoffed. This kid had to be quiet all of a sudden, of all times, to bother them. It was rather annoying.

Yu Dawei felt the doubts, but for the two repairmen, it was actually very simple to dispel those doubts: they could simply overwhelm each other with their expertise.

Although Yu Dawei was a self-taught individual in his previous life and had no real master to teach him, he studied countless books on hydraulic machinery and even read books on aircraft repair in the first half of his life.

He not only reads, but also memorizes some important things. Back then, he put in a lot of hard work to understand the principles of engineering machinery.

"How do you determine if an engine is underpowered? Generally, there are two types: one is insufficient gas compression in the cylinder, and the other is a malfunction in the fuel supply system. However, there are many specific factors that can cause these problems." Yu Dawei recited his short essay without hesitation.

"1. Check if there is any air leakage in the combustion chamber. The specific steps are as follows."

"After the engine has been running until it is warm, stop the engine immediately. Then, use the crankshaft crank handle to crank the crankshaft without decompressing the cylinders. Based on the firing order of each cylinder, judge the gas compression force of each cylinder by the feeling of the force applied. If you feel that the resistance of a certain cylinder is obviously smaller, it means that the lack of power is due to gas leakage in the combustion chamber."

"2. Fuel supply system problem, the judgment is as follows."

"Observe whether the time when the fuel injection pump finishes injecting fuel is consistent with the time when the piston reaches the top dead center of the compression stroke. If they are not consistent, simply adjust them to be basically consistent. At this time, the fuel injection advance angle can basically guarantee the use, although the accuracy will be less than that when calibrated with instruments. During the inspection, if the two times are inconsistent, that is, when the piston reaches the top dead center of the compression stroke, the fuel injection pump stops injecting fuel too early or continues injecting fuel for a long time, it means that the fuel injection timing is too early or too late, and adjustment is required."

"Based on the two points above, we can basically determine whether there is a problem with the engine power." Yu Dawei saw the shocked expressions on the two men's faces and gave a disdainful smile. "Masters, shall I continue?"

At this moment, Master Song and Master Wang were not only shocked, but also completely dumbfounded. They had never even heard of such professional knowledge before. As two truck repairmen, they were not only nervous but also felt guilty under the overwhelming professional knowledge of the other party.

The two realized they had really messed up today.

They must have run into a real expert at repairing excavators if they hadn't checked the almanac before going out.

On Zhang Shuangxi's pockmarked face, he couldn't hide his excitement for a moment. Anyone who wasn't a fool could see that this young man had professional knowledge and was definitely more reliable at repairing cars than the two next to him.

At the same time, he felt a little ashamed. He had indeed underestimated the other party. If the other party could fix the car this time, he would be willing to give him more commission.

This is what he deserves.

"I didn't expect you to be a professionally trained young man. We've been showing off our limited skills in front of an expert." Master Song was a decisive man. Knowing that he would never gain an advantage against a master, he decided to make a retreat.

He turned to Zhang Shuangxi and smiled awkwardly: "Boss Zhang, you know I'm a truck mechanic, and I'm not as good at excavators as this young man. Why don't you leave this to him? I won't embarrass myself by showing off."

"Yes, yes, young master, what's your surname? I didn't recognize you earlier, please don't take offense." Master Wang also realized that the two of them were locals from the oil city and were also formal employees of a company. If they were to try to suppress each other in a roundabout way, their reputations would be ruined.

It's better to sincerely back down than to start another argument.

"My surname is Yu. I go out to earn a little money through hard work, which is understandable." Yu Dawei found it amusing. These two guys were quite cunning, but since they were being so polite, he couldn't continue to make trouble for them.

“Brother Yu is right. Since you two are here, consider this two hundred yuan as a service fee. Thank you for taking the time out of your busy schedules to check my car.” Zhang Shuangxi wasn’t a stingy person, and besides, he was quite familiar with these two men. Although he didn’t get his car repaired today, who could guarantee he wouldn’t need their help in the future?

In business, he always thinks three steps ahead before taking a single step.

"Oh, Mr. Zhang, you're too kind." After some arguing with Mr. Zhang, the two finally took the money and went downstairs.

The two men stood with the crowd below. Although they knew they couldn't compete with the others, they still wanted to see if the other party could find the cause of the excavator's problem.

Yu Dawei didn't exchange pleasantries with Zhang Shuangxi. Although he could roughly guess some of the problems with the car, he still wanted to rule out the possibility that insufficient engine power was causing overheating.

This will also reassure Brother Zhang.

Yu Dawei entered the driver's seat and began operating the system in his mind, constantly controlling the joystick. After ruling out valve problems, he then began adjusting the throttle to observe whether there were any issues with the fuel system.

After ruling out all other possibilities, Yu Dawei was certain of the cause of the Kobelco excavator's malfunction, and the diagnosis phase could probably be over.

He got up and got out of the car, then said to Zhang Shuangxi, who was waiting nearby, "Brother Zhang, there are no problems with the engine power."

Lin Ling, Boss Liang, Duan Dahai, Master Song and Master Wang, and others also gathered around.

“The power is fine, so where could the problem be?” Zhang Shuangxi frowned again. At this moment, the feeling of exhaustion welled up in his heart again. He hadn’t been able to eat or sleep well lately because of this car.

But the next second, Yu Dawei's words instantly lifted Zhang Shuangxi's spirits, as if he had grasped a lifeline while he was stuck in the mud.

“I think I know where the problem lies.” Yu Dawei looked up at the light blue Kobelco excavator.

He sighed, "It's clearly a great thing, but unfortunately nobody knows how to play with it."

"Brother Zhang, do you still have the parts that were taken from the Kobelco excavator?" Yu Dawei turned to Zhang Shuangxi and asked.

"Yes! But the radiator is gone." Zhang Shuangxi rubbed his hands awkwardly. "The radiator was broken when the car was first brought back, so I didn't think much of it at the time. I took it off and sold it as scrap metal. I kept the other parts, like the hydraulic check valve and the thermostat."

“Okay, Brother Zhang, I’ll have to trouble you to bring back all the parts that were taken apart before. As for the radiator…” Yu Dawei glanced back at Kobelco Engine, “Let’s bring those things back first. I’ll adjust the radiator for you a bit.”

"Okay!" Zhang Shuangxi readily agreed, but before leaving, he whispered, "Brother Yu, do you mean that the high temperature is the reason why I replaced the parts?"

The others around also had the same question in their minds, but no one dared to ask. Now that they heard Boss Zhang ask, they all perked up their ears.

“Not entirely,” Yu Dawei shook his head, “but more or less. If I’m not mistaken, these original parts shouldn’t be the key issue, or even the problem. But after replacing them with new domestic parts, due to issues with quality and fit, the already extremely high temperature is even harder to bring down.”

Yu Dawei didn't say something: if he hadn't come today, and no one had discovered the key problem, the car's engine might have really exploded due to overheating.

"Alright, I'll go and get all the parts from the store right away. Please wait for me a moment." After understanding the general situation, Zhang Shuangxi dared not delay any longer and drove his Mitsubishi minivan away from the artificial lake under construction.

Yu Dawei wasn't idle either. He took his tools and climbed back up to where the Kobelco engine was, his eyes fixed on the radiator.

Perhaps no one noticed that the position of the radiator during installation was clearly different from that of the original radiator.

Yu Dawei noticed this through the marks left by the original heatsink. He hadn't noticed it at the time, but the newly installed heatsink felt awkward.

“That’s it.” Yu Dawei reached out and touched the installation marks left by the original heatsink, then glanced at the current silver heatsink.

The two machines were about two fingers apart, but it was precisely because of this two-finger gap that the Kobelco excavator almost lost its life.

"There's nothing wrong with this radiator, but the model doesn't match, and the thickness of the radiator doesn't meet the requirements of the original Kobelco radiator." Yu Dawei shook his head helplessly. Most people probably wouldn't care too much about a difference of two fingers in thickness.

PS: Thank you to reader Aa for the 1766 book coins! May Aa earn a fortune, live a carefree and worry-free life, and enjoy happiness and good health! —Han Jingfan
I also wish all my book lovers and business owners who have journeyed with me a prosperous, lucky, long, blessed, and successful New Year! —Han Jingfan



(End of this chapter)