1. When the car is started, the engine will not catch fire.
Cars sometimes start without catching fire, which is a common situation for many car owners. First of all, the engine needs to be started by the current of the battery to drive the spark plug to ignite, so the most likely thing is that the battery is rusty or leaking. Secondly, the spark plug of the engine is wet in rainy days. Generally, it is necessary to check whether the battery liquid in the battery is sufficient at most two months (the liquid level is between the upper and lower fractional lines), and also check the liquid level difference of each tank. If the liquid level is insufficient, it needs to be replenished. After that, it is necessary to keep the battery terminals clean. If the spark plug is wet, take it out and let the water evaporate as soon as possible.
2, the car fuel consumption suddenly increased.
As a car owner, if you suddenly find that the fuel consumption of your car has suddenly increased a lot, you can be sure that your car is out of order. There are many reasons for the increase in fuel consumption. It is found that the sliding distance of the car is obviously reduced during driving. At this time, it is necessary to check whether the tire pressure meets the air pressure standard. Insufficient tire pressure will not only increase driving resistance and fuel consumption, but also affect the service life of tires. The position of the tire 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.
Failure to replace engine oil, oil filter, air filter and gasoline filter for a long time will lead to insufficient fuel combustion, and the increase of engine carbon deposition will also lead to an increase in fuel consumption. Engine oil and oil filter should be replaced every 5,000 km, while air filter and gasoline filter should be replaced every 65,438+100000 km. Otherwise, impurities in air, fuel and engine oil will cause parts to wear and tear, block the oil circuit, make the engine run abnormally and increase fuel consumption.
There is something wrong with the car battery.
The change of electrolyte of automobile battery will affect the performance of battery. The optimum working temperature of the battery is about 25℃. With every decrease of 1, the available capacity of the battery will decrease by about 0.8%, and the capacity of the battery will return to normal after the temperature rises. Therefore, in cold weather, especially in the northern region, the temperature often drops to a few degrees below zero or even dozens of degrees, at which time the available capacity of the battery will be greatly reduced, so try to avoid completely discharging the battery in winter, and pay attention to whether the electrolyte is completely discharged. In addition, when driving in summer, the battery will be overcharged, the electrolyte will evaporate quickly, and the electrode pads will be easily damaged. Therefore, it is necessary to regularly check the liquid level of the battery and the specific gravity of the electrolyte, and regularly check to add distilled water to the battery to ensure the normal work of the car.