1. Adverse reaction: a pool of inexplicable liquid leaked under the car, and the coolant level dropped.
Cause of illness: Usually, the cause of dripping water is a crack in the rubber pipe connecting the coolant tank and the engine.
Green maintenance: The deterioration of the rust-proof quality of the deteriorated coolant will not only easily lead to the damage of radiator, pipeline, hose and other parts, but also cause environmental and air pollution if the coolant drops to the ground because its main component is ethylene glycol. However, it is difficult for us to judge whether the coolant has deteriorated by visual inspection, so we should change the coolant regularly, and don't wait until it fails to repair it. It is generally recommended that the vehicle should be replaced with new coolant every 40,000 kilometers or two years, and the cooling fan belt should be replaced every two years.
2. Adverse reaction: the engine does not catch fire.
Cause: The engine is started by the current of the battery to push the spark plug to ignite, so the starting system is out of order, which is probably caused by the rust of the battery or the leakage of the battery.
Green maintenance: check whether the battery liquid in the battery is sufficient once every two months. If it is not enough, distilled water can be added to an appropriate height. At present, most cars use maintenance-free batteries, so you can't add water without authorization. In addition, check whether the positive and negative electrodes of the battery are rusty or dirty every year. If there is, it should be cleaned in the 4S shop in time to keep the circuit open. After the battery is repaired, it can delay the battery scrapping time, reduce the waste of resources and the pollution of abandoned batteries to the environment.
3. Adverse reaction: the engine exhaust noise increases, and the exhaust emission also exceeds the standard.
Cause: The exhaust gas of the engine is oxidized at high temperature, which easily leads to the leakage of the exhaust system.
Green maintenance: check whether the pipes and joints (especially silencers) of the exhaust system are corroded by exhaust gas and whether the joint pads are washed away. If the exhaust system leaks, repair or replace the leaking parts in time. Checking once a year can not only ensure the normal operation of the exhaust system, but also reduce the pollution of harmful substances in the exhaust gas to the environment.
4. Adverse reaction: the fuel consumption of automobiles is increased.
Cause of illness: There are many reasons for the increase in fuel consumption. But the most common and easily overlooked is the inspection of tire pressure. Insufficient tire pressure will not only increase driving resistance and fuel consumption, but also affect the service life of tires.
Green maintenance: bring your own tire pressure gauge and check the tire pressure frequently. Remember not to forget to check the spare tire, so as not to find it flat when it is in urgent need of replacement. The tire pressure will be higher than usual when the temperature is high, so it is more accurate to measure the tire pressure in cold weather or in the shade. Generally, the tire position should be changed every 65,438+00,000 kilometers to avoid a big difference in the degree of wear before and after. If it is necessary to replace severely worn tires, it is best to replace two or four tires together, and tires with the same grain can be replaced alternately. In addition, the dotted tire helps to save fuel.
5. Adverse reactions: engine power performance decreases, fuel consumption increases, and nozzle is blocked.
Cause of illness: This is probably due to insufficient fuel combustion and increased carbon deposition in the engine due to long-term failure to replace the oil, oil filter, air filter and oil filter.
Green maintenance: It is recommended to replace the oil and the oil triple filter every 5,000 km, and the air filter and the oil triple filter every 1000 km. Otherwise, impurities in air, fuel and engine oil will cause parts to wear and block the oil circuit, thus affecting the normal operation of the engine.
6. Adverse reaction: the oil pump is prone to failure.
Cause of illness: unreasonable behavior during refueling may cause damage to the oil pump.
Green maintenance: when refueling, try not to wait for the fuel alarm light to come on before refueling, otherwise the service life of the oil pump will be shortened, and the oil pump may be burned if the oil storage is too small or the fuel is exhausted. If you often drive in urban areas, it is convenient to refuel, and you don't need to fill it up at one time, because this may lead to the failure of oil film and sensor, the distortion of oil meter and the increase of fuel consumption. It is recommended not to empty and refuel in general.
7. Adverse reaction: automobile exhaust emission is unqualified.
Cause of disease: The catalyst in the three-way catalytic purifier can convert carbon monoxide and hydrocarbons in the waste gas into carbon dioxide and water vapor. If the catalyst fails, the tail gas will exceed the standard.
Green maintenance: the normal service life of the three-way catalytic purifier can reach more than 654.38+ 10,000 kilometers, but lead will destroy the activity of the catalyst and make it ineffective, so gasoline containing lead additives and detergents cannot be used. However, after 2007 in Guangzhou, OBD (full name on-board exhaust gas diagnosis system) has been installed on licensed vehicles. If the exhaust gas exceeds the standard, the vehicle will automatically give an alarm or even interrupt the engine.
8. Adverse reaction: after replacing the three filters, there is still engine lag and poor acceleration, and black smoke is emitted.
Cause: There is something wrong with the fuel system, such as carbon deposition in nozzles and valves.
Green maintenance: the fuel system needs to be cleaned and maintained 1 time every 1 0,000 km. Use water-removing and rust-proof fuel system cleaning protective agent to remove colloid and carbon deposit inside the system, prevent harmful corrosion, avoid and put an end to the leakage of seals and water tanks, and completely replace the old coolant.
9. Adverse reaction: The fuel system and the three filters have been cleaned, but the engine is still underpowered, the tail gas emits black smoke, and the fuel consumption is high.
Cause of disease: It is likely that the dirt of air filtration hinders air circulation, which reduces power and increases fuel consumption.
Green maintenance: The function of air filter is to purify the air entering the cylinder. Dirty air may cause engine performance failure. Therefore, every 1000 to 2000 kilometers, it is necessary to check whether there is dust or water in the air filter and the hose at its lower end, and if there is, it should be maintained in time. However, the air filter needs to be replaced after driving 10000 km or 1 year.
10. Adverse reaction: the battery becomes unstable.
Cause of illness: Abnormal change of electrolyte will affect the performance and reliability of battery.
Green maintenance: When driving in summer, the battery will be overcharged, the electrolyte will evaporate quickly, and the electrode sheet will be easily damaged. Therefore, it is necessary to regularly check the liquid level and electrolyte specific gravity of the battery (the electrolyte specific gravity is smaller than that in winter), and often add distilled water to the battery; Try to avoid complete battery discharge in winter, and pay attention to whether the electrolyte is frozen. Cherish your battery. A button-sized battery can pollute 600,000 liters of water, which is equivalent to a person's total drinking water in his life. 1 No.5 battery can make 1 square meter of soil barren.