The engine is the heart of the car, and poor maintenance can affect the performance and service life of the car. In order to keep the car away from the “sickness”, Xiaobian gives you a trick.
Causes of car engine failure
Failure to maintain on time: Usually people always like to spend a lot of money on the modification, but it is easy to ignore the maintenance of the engine on schedule. According to professional car maintenance operators, the failure of vehicles due to poor engine maintenance accounts for about 50% of the total failures. “It can be seen that engine maintenance can play a vital role in extending the life of the vehicle.
Oil deterioration: Different grades of oil will change during use. After a certain mileage of the vehicle, the performance will change, which may cause problems for the engine. In order to avoid the occurrence of these faults, the engine should be changed regularly according to the conditions of use, and the oil quantity should be moderate, generally between the upper and lower limits of the oil scale. When the oil passes through the pores of the oil filter element, solid particles and viscous substances in the oil are accumulated in the filter. If the filter is clogged, the oil will not pass through the filter element smoothly, it will swell the filter element or open the safety valve. It will pass the bypass valve and still bring the dirt back to the lubrication part, which will accelerate the wear of the engine and increase the internal pollution. Therefore, regular replacement of the oil filter is equally important.
Air filter plugging: The intake system of the engine is mainly composed of air filter and air inlet. Depending on the application, the air filter should be cleaned regularly. The high-pressure air can be blown from the inside out to blow out the dust from the filter. Since the air filter is made of paper, it is necessary to pay attention to the pressure of the air when blowing, so as not to damage the filter. The air filter should be replaced with a new one after cleaning for 3 times. The cleaning cycle can be determined by the air quality in the daily driving area.
Drainage of intake pipe: If the vehicle is frequently driven by roads with more dust and poor air quality, you should pay attention to cleaning the intake pipe to ensure the smooth flow of intake air. The intake duct is very important for the normal operation of the engine. If the intake duct is too dirty, the charging efficiency will be lowered, so that the engine cannot operate within the normal output power range, which will aggravate the wear and aging of the engine.
Crankcase sludge: During the operation of the engine, the high-pressure unburned gas, acid, moisture, sulfur and nitrogen oxides in the combustion chamber enter the crankcase through the gap between the piston ring and the cylinder wall. It is mixed with the metal powder generated by the wear of the parts to form sludge. A small amount of sludge can be suspended in the oil, and when it is large, it is separated from the oil, clogging the filter and the oil hole, which makes the engine difficult to lubricate, thereby aggravating the wear of the engine. In addition, when the oil is oxidized at a high temperature, a paint film and a deposit of carbon are adhered to the piston, so that the engine fuel consumption is increased and the power is lowered. In severe cases, the piston ring is stuck and pulled.
Fuel System Maintenance: Maintenance of the fuel system includes replacement of the fuel filter, cleaning of the carburetor or fuel nozzle, and fuel supply lines. When the fuel is supplied to the combustion chamber through the oil passage, it will inevitably form colloid and coke deposits, which will deposit in the oil passage, carburetor, injector and combustion chamber, interfere with the flow of fuel and destroy normal. The air-fuel ratio causes poor fuel atomization, causing performance problems such as engine wobble, knocking, unstable idle speed, and poor acceleration. Cleaning the fuel system with a fuel system cleaner keeps the engine in top condition at all times.
Rusting and scaling of water tanks: Rusty and scaling of engine water tanks are common problems.
Attention to sludge
The current oil contains detergents and dispersants that remove carbon deposits. It can clean metal surfaces and disperse dirt. Generally, there is no sludge. However, if the detergent and the dispersing amount in the oil are not enough, the oil will oxidize under the catalysis of high temperature environment, air, fuel vapor and metal, and a paint film and carbon deposit will be formed. When accumulated over a long period of time, sludge will appear.
There are several reasons for the sludge: 1. I bought the fake oil, the owner went abroad, the car was placed in the garage for one or two years, the oil was not changed in time, I didn’t understand the maintenance, and I didn’t change the oil.
At this point you need to change the oil and oil filter immediately. Try to use the engine cleaning agent before the oil change. The engine internal cleaning agent can be bought in the market, and the washing effect is related to the pollution degree of the sludge inside the engine. If you are not sure, go to the regular maintenance store.