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

Chapter 214 Diagnosis: The problem of a truck not starting - if the filter element in the low-pressure oil circuit is old.
If the filter element in the low-pressure oil circuit is not replaced for a long time, it may also cause the engine to fail to start. However, the filter element is located too far away, and Yu Dawei's large hand cannot reach in at all, so he can only check the high-pressure oil circuit first.

The high-pressure fuel system includes the fuel injector and the fuel pump. The function of the fuel pump is to increase the fuel pressure so that the fuel can achieve a better atomization effect. If it malfunctions, it can also cause the truck to fail to start, which is a key concern for Yu Dawei.

Of course, what Yu Dawei is most concerned about is the fuel injector. It's not just trucks, but other cars as well. If the engine won't start, it's most likely that there's a problem with the fuel injector to some extent.

The technical term for a fuel injector is "fuel injector," and this part is present in all types of engines, regardless of cylinder count.

To verify if there was a problem, Yu Dawei had to disassemble the fuel injector, take a look, and then restart the engine to check the amount of fuel return. He would then use the amount of fuel return to determine if the fuel injector was faulty.

"A-Gui, help me remove the return oil from the nozzle and the return oil from the pump. I'll start the engine again in a bit." Yu Dawei entrusted this small task to A-Gui.

Disconnecting all of these parts will also allow you to check if there is a problem with the oil pump.

After seeing that the other party had finished quickly, Yu Dawei also started the car. After turning the key switch, the engine fan only ran for a few seconds before stopping.

After turning the knob again, it still wouldn't start. After repeating this two or three times, Yu Dawei discovered that the second fuel injector and the fourth return fuel nozzle were faulty, but the fuel pump was fine and not damaged.

“It’s not easy. I brought some engine parts, but no fuel injectors.” Yu Dawei frowned and turned to look at the man. “It’s probably a broken fuel injector. Replacing it with a set will solve the problem. But we came in a hurry this time and didn’t bring any fuel injectors. You probably don’t have any spares in your car, right?”

"Huh? I don't even know what a fuel injector is. Where am I supposed to get a spare?" The man scratched his head awkwardly.

Yu Dawei sighed: "How about this, I'll drive back first and get you a set of oil nozzles, otherwise I don't see any other way right now."

"Okay, then, Mr. Yu, could you please help me take my wife home first?" The man watched Yu Dawei jump out of the car, forcing a smile on his face. "Also, how much is a set of fuel injectors, and what about your repair fees?"

“Your car’s fuel injectors normally cost 41 each, so six would be 240. If I were to get them repaired at a factory, it would cost 200 yuan. But since we’re doing a field rescue, it’ll cost at least 500 yuan,” Yu Dawei said, looking directly into the other person’s eyes.

The price wasn't low, but it wasn't high either. Since repairing this kind of car was considered one of the simpler problems in the series of difficult cases, Yu Dawei didn't charge more.

If a regular repairman comes over, he can usually figure out the cause of the problem by fiddling around a bit, but if it's something more complicated, the price for treating such difficult cases might double.

But now Yu Dawei earns money from wilderness rescue. In fact, he could ask for more. He could just give up a little bit, and as long as it doesn't cross the other party's bottom line, they might accept it.

After all, he still has a pregnant wife, but Yu Dawei isn't the kind of person without principles. He wants to finish the repairs as soon as possible so the young couple can drive home.

"Alright, alright! I'll leave it to you, Master Yu." The man was very happy, and the corners of his mouth turned up even wider. He was also more enthusiastic about Yu Dawei than before.

The main reason is that this price is much cheaper than the time he broke down and needed wilderness rescue before, so this price is already very good.

"Okay, I'll be right back. You'll have to work a little harder," Yu Dawei replied, then turned and drove off with Xiao Agui and the other woman's wife toward Luhe Town.

The man's wife was also a talkative person, with a warm and cheerful personality.

Knowing that Master Yu was a good person, they started chatting on the way.

Her husband only returned to his hometown to drive this year because she was pregnant. He was worried about her and wanted to find work back home. It just so happened that her younger brother had gotten a big truck.

However, the return of her husband also brought its own set of troubles. Her husband was straightforward, and when he was away, the young wife and mother-in-law got along quite well, though not to the point of being overly affectionate, but generally they treated each other with respect.

But after the man comes back, the young wife will definitely talk about her mother-in-law's daily life behind her back, as gossip before going to bed.

As a result, her husband, Yu Dawei, interpreted it as "the brain is not fully developed, and the cerebellum is completely underdeveloped." When his wife spoke ill of her mother-in-law, he would turn around and tell his own mother the next day, asking her to change her ways and not to do it again, because his own wife couldn't stand it.

A husband who is good at talking is usually a bridge between his mother and daughter-in-law, but he's more like someone who blows up bridges, stabbing his wife and mother in the heart.

The atmosphere at home became increasingly tense, and now the young wife was too ashamed to be alone at home with her mother-in-law. This time, her husband got a job nearby, and she ignored her family's advice and went out with him.

Unexpectedly, the car broke down on the way back. The young wife, worried that her unborn child would get cold, kept her belly warm with both hands. Yu Dawei listened to the first half of the story as amusement, but felt a pang of sadness in the second half.

His wife was also pregnant, and it was during her pregnancy that he was not good at mediating between his mother and Han Jingfan. To put it bluntly, he was not good at reconciling things, which led to increasing conflicts between his mother and daughter-in-law.

After being reborn, he spoke highly of Han Jingfan to his mother while also praising his mother's sacrifices to Han Jingfan. With various misunderstandings resolved, the relationship between mother-in-law and daughter-in-law improved.

Yu Dawei could only feel sorry for the guy who was looking at the car. If you can't see through these kinds of things and don't care about these details, you won't be able to work peacefully even when you're out there. He just hoped that guy would realize it soon.

After a journey of more than an hour, Yu Dawei successfully took his wife home. His home was in a small courtyard down in the town, not far from Boss Liang's shop. He went to Boss Liang's place on the way and took her to the truck parts store in town.

This is the only truck parts store in the whole town. The other party also followed Boss Liang's idea and switched from selling agricultural machinery to selling truck parts in the middle of this year. Business has been better than before.

Yu Dawei returned all the parts he had previously delivered to the other party, then took a set of Yellow River truck nozzles and left.

When they rushed over again, there were several cigarette butts in front of the Yellow River truck, and the man was huddled inside the truck.

In an environment with temperatures below minus thirty degrees Celsius, it's impossible not to feel cold.

Without further ado, Yu Dawei quickly got on the truck, removed the old oil nozzle, replaced it with a new one, and then restarted the engine. With a loud rumble, the old Yellow River truck was successfully started.

The man happily counted out eight hundred yuan to Yu Dawei, repeatedly expressing his gratitude, and even said that he would treat Yu Dawei to drinks when he had time to go home.

Yu Dawei simply accepted the other party's kindness, gave them his change, and left with 740 yuan in his pocket.

On the way back, he reviewed the entire repair and diagnosis process with Xiao Agui, and explained his previous thoughts.

Xiao Agui can disassemble and reassemble vehicles, but he doesn't diagnose problems using a macroscopic approach. He only does so by disassembling excavators or bulldozers into small pieces and then judging which parts are faulty and replacing them.

This method is a habit developed from repairing cars in Yu Shui. It's not bad, but the repair work here at Yu Dawei's place isn't about disassembling parts, so he has a better way to teach him.

When the two returned to the factory, it was already four or five o'clock, and the sun was setting in the west.

Yu Dawei thought the wilderness rescue and car repair business was over, but to his surprise, he was frequently asked for wilderness rescue services in the following days.

There are also some complicated cases, but they are rare. Most of them are minor problems, such as the battery suddenly dying and needing to be started, but the car is in a desert meadow with no cars passing by. The only option is to ask people on the occasional passing horse-drawn or ox-drawn carts to help make a phone call for wilderness rescue.

And so, Yu Dawei began to work in wilderness rescue with Xiao Agui. As the number of rescues increased, his reputation spread. Bus drivers, truck drivers, and local car owners all knew that Fanfan Repair Shop could perform wilderness rescues.

Unwittingly, Yu Dawei opened up a whole new business scope for Fanfan Repair Shop, but it made things difficult for Yu Dawei and Xiao Agui.

Wilderness rescue is not as simple as it seems. The first thing to face is the cold weather. Repairing a car without any heating measures will definitely cause your hands and feet to freeze if they are not warmed for a long time.

Old Ji and Fu Zi at least have a warm house, so they can go back inside to warm up when it gets cold. But what can Yu Dawei have in the wild?
I can only leave my Fiat car idling in the engine until it gets cold, then crawl into the car to warm it up.

Besides the temperature issue, repairing cars is also extremely inconvenient because you don't know the situation before you go. Even if you hear from the driver, you will find new problems after you get there, and you can never bring all the necessary repair tools and parts.

These past few days, a truck needed to be repaired using gas welding to replace the rusted and damaged leaf springs underneath. However, Yu Dawei's small car couldn't fit such a large oxygen and acetylene cylinder, so he had no choice but to contact Boss Liang and use his pickup truck to complete the repairs.

Afterwards, Yu Dawei very considerately gave 40% of the profits to Boss Liang, since he had only used the other party's car.

Boss Liang also discovered that wilderness rescue was very profitable, so he started acting as Yu Dawei's distributor again, helping Yu Dawei find wilderness rescue jobs, making small profits in the process, and then secretly hiding the small profits so that his wife wouldn't find out.

Will he still need to live a life of dependence from now on? His liberation as a serf is just around the corner!

(End of this chapter)