[Car owners’ home car knowledge]Scene in a car repair shop: "Brother, the maintenance man behind you just checked it. Your car needs to clean the oil line. The cost is XX yuan. If it is not cleaned... the fuel injector will... If there is a problem, we... …”
When the staff says something like this to you, I believe that many car owners are thinking: What is he talking about? Forget it, I don’t know much about cars anyway, so I might as well clean it up. If I’m not afraid of 10,000 yuan, I’m just afraid of the worst... so I pay for it. A few pictures of "Red Mao Zedong" were released...
So now the question comes, does your car need to clean the oil line? How do we maintain the oil line? Please read on.
First, let’s take a brief look at the oil circuit. What we usually call automobile oil lines usually include two types: engine oil lines and gasoline lines. The oil circuit refers to the path inside the engine where the oil runs through the oil pump. The gasoline line, also called the fuel system, refers to the pipeline between the vehicle fuel from the fuel tank to the engine combustion chamber.
The oil circuit mentioned in this article refers to the latter, which is the fuel system of the car. It includes: fuel filter, gasoline pump, fuel pressure regulating valve, gasoline pipeline, carbon canister, and fuel injector.
The role of oil circuit in engine operation:
Regarding the complete working principle of each component of this entire oil line, most of the car owners are not professional technicians, so they do not need to study it thoroughly, they only need to understand the basic working principle. The general working principle is also very simple, including the following steps:
1.The oil pump pumps the oil in the tank into the pipeline to maintain a pressure of about 2.5 kg.
2.The fuel filter is located between the fuel pump and the fuel pressure regulator, and plays a filtration function to filter out harmful particles and moisture in the fuel.
3.The fuel pressure regulator controls the pressure in the oil circuit, and then injects the fuel into a mist through the fuel injector, which mixes with air and enters the cylinder (some engines also use direct injection in the cylinder).
Reasons for cleaning oil lines:
After the fuel system has been working for a period of time, the carbon deposits and colloids formed by combustion will adhere to the fuel injector, causing the fuel injector to stick or even become clogged. Impurities and dust in the air and gasoline can also cause blockage or blockage in the oil circuit, eventually forming carbon deposits and deposits on the fuel injection nozzle (carbon deposits can also form on the valve, combustion chamber, and intake pipe, but this article mentions (only for carbon deposits on the fuel injector).
If the oil circuit is not cleaned for too long, carbon deposits and sediments will clog the injector needle valve and valve hole, affecting the performance of precision components of the injection system, resulting in poor fuel injection, poor atomization, or even no fuel injection. This results in unstable idle speed of the car, increased fuel consumption, weak acceleration, and difficulty in starting.
General methods for cleaning oil lines:
1.Adding fuel cleaner directly to the fuel tank is the simplest method, but the effect is not long-lasting and the cleaning effect is not thorough. Suitable for vehicles with shorter mileage.
2.Use the "hanging bottle" method for cleaning.
"Putting a bottle on"This method can clean the carbon deposits and sediments in the oil lines and valves at the same time. It is also a method generally recommended by car repair shops.
3. Use a disassembly-free washing machine for cleaning.
This method uses a special non-disassembly and cleaning machine to connect the engine oil inlet pipe and oil return pipe to the non-disassembly and cleaning machine oil inlet pipe and oil return pipe, and uses a special interface to connect the oil inlet pipe and oil return pipe to form a loop. It is convenient and quick to operate, but because it only cleans the fuel injector, it does not clean the carbon deposits on the valve, so... .You know, car repair shops wouldn't recommend it. However, when it comes to cleaning the oil circuit alone, the effect is very obvious and it is a good way to clean the oil circuit.
4. Directly remove the entire oil line and clean it thoroughly.
This method is suitable for cars with more than 100,000 kilometers and serious oil circuit blockage. Needless to say, the effect is definitely the best, but it also takes the longest time and requires the highest technical skills from maintenance personnel. And if you usually pay more attention to the care of your car, there is generally no need to use this method. So this method is also a last resort.
Frequency of cleaning oil lines:
Cleaning the oil line is an essential maintenance item, but it is not required for every maintenance. Take hair washing as an example. Washing your hair once a day is for cleanliness, washing your hair once a week is disgusting, but washing your hair every hour is not necessary. Not only is it unnecessary, it will also cause damage to your hair.
The same goes for cleaning the oil line. Some car owners are careless and think that cleaning the oil line is useless and never clean the oil line. This will cause the consequences mentioned above in the long run. There are also some car owners like the car owners mentioned at the beginning of the article who listen to some unscrupulous repair shops that only care about profit and clean their cars too frequently. It seems like "love to clean", but in fact it is completely unnecessary. Not only is it unnecessary, because the cleaning agent contains a large number of chemical components, excessive cleaning will also cause great damage to the three-way catalytic converter and cause unnecessary damage to the vehicle.
The normal cleaning frequency should be 30,000-40,000 kilometers/time, and should be increased or decreased appropriately according to the driving conditions and vehicle conditions. For example, congestion in urban road conditions will accelerate the blockage of oil lines.
How to maintain car oil lines?
As the saying goes, "three points of cultivation, seven points of nourishment." If you want to extend the cycle of cleaning the oil lines and protect the oil lines of your car, daily maintenance is also essential. It can be summarized into the following points:
1.You should go to regular gas stations and fill up with high-quality fuel.
2.You can choose to add some fuel cleaner to the fuel tank every once in a while, but it should not be too frequent.
3.During maintenance, be sure to pay attention to the inspection and replacement of the fuel filter to enhance the fuel filtration effect.
Conclusion:Next time I go for maintenance, I think everyone knows how to answer the question at the beginning of the article. The purpose of writing this article is also very simple, just to prevent everyone from being easily fooled. As car owners, we may not know how to repair cars, but we need to know some car knowledge, otherwise we have to give money to others when we are cheated.
Email: