Where should cars be cleaned regularly?

In car maintenance projects, cleaning projects cost a lot of money, as well as a lot of money. Many of them have no strict standards. How many kilometers do they have to wash? Or to what extent should it be washed? For example, cleaning the three-way catalytic fuel injector can't be detected by the computer and can't be seen by the eyes. When you open a maintenance order in a 4S shop, the receptionist will directly say that your car is 20,000 kilometers, and it is time to clean the nozzle and the three-way catalytic converter. It is not known whether it is really dirty. Today, let's talk about the places where cars should be cleaned regularly. When should I wash it?

There are only two contents of cleaning, cleaning dirt and carbon deposition. Dirty refers to the vehicle appearance and engine surface. There shouldn't be anyone who doesn't know how to wash the car. Wash it when it is dirty. It's always uncomfortable to go out in a dirty car. It's a matter of face. But there is another reason, that is, in order to protect the paint surface, the dirt on the car body is corrosive to the paint, especially some grease, bird droppings, and rainwater in places with serious air pollution. Even if you don't wax and maintain the paint surface, washing the car regularly can make the paint surface bright and lasting, and there will be no new car that has been used for two or three years, which looks like five or six years from the outside. Cleaning an engine is similar to washing a car. First, it looks more beautiful after cleaning, and second, it can protect the wiring harness in the engine compartment from corrosion.

Then there is the problem of cleaning up carbon deposits. After carbon deposition, it should be cleaned. The places to be cleaned are throttle, fuel injector, air inlet, carbon deposit in cylinder and oil passage. If there is nothing wrong with the car, it is maintenance and cleaning. Only these five places need cleaning. Other places do not need cleaning, such as transmission oil gallery, cooling water gallery, booster oil gallery and three-way catalytic converter. As long as these oils can be replaced on time, there is no need to clean them when replacing them. Cleaning is a waste of money. If there is no problem with the quality of the added engine oil, there is no need to clean the three-way catalyst.

Where cleaning is needed, how long is the cleaning cycle? Let's talk about the cleaning of the oil gallery. In 4S shop, this should be called deep maintenance and cleaning of lubrication system. If the oil can be changed on time, it can be cleaned once every 30,000 kilometers. In a 4S shop, it may need to be cleaned every 65,438+00,000 kilometers. This cleaning is purely maintenance. We don't know the state before cleaning, and the effect after cleaning is still unknown. Only when the car is old will it make a difference. Cleaning the car regularly, the oil circuit is not blocked by sludge, and the lubrication effect is good. If it is not cleaned, the oil circuit will be partially blocked, the lubrication effect will become worse, and the engine will wear more. Therefore, if you want to use the car for a long time, you should wash it every 30 thousand kilometers. If you plan to sell it in' 67, it will never wash off.

Then the throttle, fuel nozzle, air intake and carbon deposit in the cylinder, in which the fuel nozzle is the least easy to get dirty, except for direct injection vehicles, the throttle and air intake are the easiest to get dirty. Whether the throttle is dirty or not can be seen by the naked eye. You can see it by opening the intake hose connected to the throttle. After the throttle is dirty, there will be obvious abnormalities, such as serious idle jitter, slow acceleration response, and even the engine fault light is on, telling us to wash the throttle. If the throttle is dirty, it must be washed, because it will have a great impact on the vehicle, and if it is serious, it will not be able to use the car normally. However, how many kilometers will be dirty is not fixed, and it varies greatly due to the environment and habits of vehicles.

Under normal circumstances, most of the time driving in urban areas, the throttle should be cleaned once every 20,000-40,000 kilometers, and the same is true in other places, but the time can be later than the throttle, and it can be cleaned once every 30,000-50,000 kilometers. The specific number of kilometers to be washed should be determined by computer detection and naked eye observation, but it can't be washed without checking a certain number of kilometers. If it is a direct injection vehicle, carbon deposition is more likely to occur in the nozzle and cylinder, and the cleaning time needs to be advanced. Car habits have a great influence on carbon deposition. I have seen that the throttle should be cleaned when it is less than 10 thousand kilometers, because the engine fault light is on because the throttle is too dirty. His car habit is to drive to and from work instead of walking, and his home is only two or three kilometers away from the company. The car is not hot enough to stop and turn off the engine, so the carbon deposition rate is the fastest.