The engine is the heart of the car. Once the engine is out of order, the car tends to move. The economy, power, and environmental protection of the entire vehicle are all related to the operation of the engine. Therefore, maintaining the engine is the most important task for maintaining the car.

Automobile manufacturers generally object to the user's own demolition and repair, emphasizing the user to send special maintenance stations to overhaul. What the user needs to do is to use the operation correctly and maintain it in a timely manner. The so-called "seven-point maintenance and three-point repair" will increase the maintenance to a strategic height. Hubei Heli Special Purpose Vehicle Manufacturing Co., Ltd. has accumulated many years of long-term experience, summed up a set of methods for the maintenance of automotive engines, and hopes to be able to help the majority of users.

First, good skills and careful observation

1. Avoid low-lying plots

After the storm, there is often water on the road surface. Never drive a car to drive it to avoid serious damage to the engine. Because once the engine inhales water, the combustion chamber is filled with water, high-speed rotation of the crank rod linkage mechanism is hard to rush upward, and water is an incompressible body, the huge inertia force will often be bad top of the connecting rod. Sudden encounter of cold water in the high temperature of the cylinder block is also likely to cause cracking of the cylinder, and the electronic control part of the computer-controlled EFI engine will form a short circuit if it seeps into the water, causing damage to the components and even the computer, resulting in heavy losses. Therefore, in the event of a heavy rain, advise you to be patient, wait for the first time, it is best to open the car to a higher ground, wait for the water to retreat. Don't think you're lucky enough to rush over from stagnant water.

2. Insufficient fuel to add in time

An electric fuel pump in the tank is responsible for delivering the fuel to the engine. When the motor is working, it will generate heat. When it sinks in the fuel, the heat will be cooled by the surrounding fuel and it will be able to operate for a long period of time. When the fuel in the tank is seriously insufficient, the oil pump is exposed to the air, and the temperature of the motor gradually increases, and it is easy to burn the motor. Therefore, when the fuel gauge pointer reaches the warning area, fuel must be added in time.

3 starter can not be used frequently in short term

Sometimes, the engine does not catch fire for some reason, and drivers often start frequently. In fact, the starter consumes a lot of power, which is generally several hundred watts, which seriously consumes the battery's electrical energy reserves. If the engine cannot be ignited, there will be no power supply, and the battery will be easily damaged. Therefore, when the engine cannot be started with several ignitions, it is necessary to first check the cause, eliminate the fault, and start it again.

Second, develop a positive inspection of maintenance habits, select the appropriate lubricant

1. Learn more about car performance. Do it yourself.

Men like to repair or modify their cars in their spare time. Of course, we also engage in some small creations and inventions. It is convenient to buy spare parts anyway. Build your own computer or design and create some electronic products, like the now popular DIY fashion. When the boys were 13 or 14 years old, they sneaked up and drove along. With his father repairing his car, he was driven to a legal age and drove about everywhere. The structure and performance of the car were well known.

2. Inspection, addition and replacement of oil.

Engine oil is of special importance to the engine because the engine speed now reaches six or seven thousand revolutions per minute on the sedan and even tens of thousands of revolutions on the car. The linear velocity of the piston moves up to several tens of meters, and it is performed under high temperature and high pressure. If there is no compatible engine oil as a lubricant, the engine will soon be damaged. Because the oil will be partially volatilized at high temperatures, check the oil level often with an oil gauge, and add it in time if it is insufficient. However, it should be noted that the newly added engine oil must be the same model. Otherwise, if the two oils with different chemical compositions are mixed together, a chemical reaction will occur and the oil performance will be deteriorated. The choice of engine oil depends on the local temperature conditions. When the engine is running at a high speed, there will often be some metal chips and impurities falling off, and the engine oil will deteriorate even if it is used for a long time. Therefore, timely replacement is necessary. All kinds of automobiles have clearly defined oil change times, typically after a run-in period of 1,000 to 1,500 kilometers, and after each run of 5,000 to 8,000 kilometers. In routine inspections, if the oil is thickened and turned black, it indicates that the engine oil has deteriorated and needs to be replaced in time. In areas where there is a wide range of temperatures, the summer and winter seasons are due to the need to replace the oil of the corresponding grade.

Third, pay attention to the maintenance of the fuel system

1. Try to use reliable quality fuel and add fuel additives if necessary

This is especially important for EFI engines. This is because the temperature inside the electric spurt may reach more than 200 degrees, which makes it easy to form carbon deposits and gums above the fuel injection nozzle, valve stem and intake valve. This leads to loose valve closing and cylinder pressure drop, resulting in cold valve adhesion. , nozzle oil blockage and so on. The fuel additive contains anti-knock agent, anti-wear agent, oxidizer, cleaning dispersant, etc. It can effectively remove the carbon deposit and gum of the fuel system, increase the burning speed of the fuel, and reduce exhaust pollution. If only high-grade gasoline is used in large cities, the natural problem is not too great. But if you drive a car to a small and medium-sized town for fuel, it is best to add a bottle of reliable fuel additives.

2. Regularly clean the oil circuit system. It is best to use a disassembly-free fuel cleaning method.

Although many vehicles use fuel additives, they still produce carbon deposits and gums. Therefore, after running 20,000 to 25,000 kilometers, the oil system must be thoroughly cleaned. Now more regular auto repair plants are equipped with disassembly-free fuel cleaning equipment. It is also very simple to connect it with the oil circuit, input a specific chemical cleaning agent, and idle the engine for a period of time. The cleaning agent can soften and decompose the coke, emulsify and dissolve the gum and oil, and burn it. , discharge outside the machine. It has been reported that a car repair shop in the Mainland has used this method to clean 50 automobile engines and achieved remarkable results. On average, the output power of the engine has increased by 26.37%, the fuel economy has been 11.20%, and the CO emission has dropped by 63.40%. The volume has dropped by 59% and the effect is very significant.

Fourth, keep the engine assembly clean

1. Regularly clean the filter element of the air filter, replace the three filters when the car is second-protected

For every one thousand kilometers or so, it is best to remove the filter element from the air filter and use compressed air to blow away dust and other dirt from the inside. Some vehicles have a dust-integrated cup at the air inlet, and they should always check and dump the dust. The three filters refer to three kinds of filters: fuel, oil, and air, and the oil filters generally have two coarse filters and fine filters, and they must be replaced when the car is insured. Different regions have different road conditions and the time for cleaning and replacement varies.

2. Check and supplement coolant

If the liquid level of the liquid in the liquid tank is lower than the minimum mark, it must be supplemented with the same kind of liquid coolant. If necessary, distilled water can be used instead. It is important to note that it is important to wait for the temperature to come down before opening the lid, otherwise high temperature water can easily burn the person.

3. Adjust valve clearance

After the car has been driving for a period of time, it is sometimes heard that the engine has a “squeaky, squeaky” sound. This is often because there is a large gap between the valve and the valve lifter. At this time, the gap should be adjusted. However, the modern new car engine has already used the hydraulic tappet. It can automatically eliminate the gap and the problem is naturally solved.

4. Check and clean platinum contacts

The platinum contacts on the distributor will have ablation over a period of time. This will increase the resistance, decrease the ignition energy of the spark plug, and reduce the output power of the engine. This will cause the oxide layer to be lightly polished with fine sandpaper. . But pay attention to the area of ​​the contact can not be less than 80%, beyond the replacement.

5. The spark plug should always check

If one finds that the engine power is decreasing, one of the possible reasons is that the spark plug is to be overhauled.

Iron Wire and Wire Products

Iron Wire And Wire Products ,Flux Wire,Stainless Welding Wire, Stainless Steel Welding Wire

Jiangyin Vankey Machinery Technology Co.,Ltd , https://www.jswkweldingwire.com