Excessive oil consumption is the most common maintenance problem encountered by car owners. Many car owners find that the oil level shown on the oil dipstick drops significantly soon after adding oil, which is inevitably anxious. In fact, under normal circumstances, it is a normal range for a vehicle to consume 0.5-1 liter of oil every 5,000 kilometers, so there is no need to worry too much. But if the oil consumption is significantly higher than the standard, it is necessary to focus on checking three aspects: first, internal engine leakage. Open the engine hood to check the oil dipstick. If the oil is milky white, it is necessary to immediately detect the cylinder pressure, focus on checking whether the valve oil seal, piston ring and other seals are worn. If the cylinder compression ratio is lower than 5.5 bar, the piston group needs to be replaced in time; second, external leakage. Check whether there is oil stain at the oil pan and oil filter interface. You can use antifreeze fluorescent agent to detect the leakage point and replace the rubber seal with a temperature resistance of not less than 150℃; third, improper oil management. It is recommended to use fully synthetic oil and perform regular maintenance. Replace the oil filter every 5,000 kilometers, which can effectively extend the service life of the engine and reduce oil consumption. Abnormal tire wear is another major common problem affecting driving safety. Different wear forms correspond to different fault causes, and accurate judgment can solve them quickly. If there is tire eccentric wear, it is likely caused by abnormal tire pressure. It is recommended to use an electronic tire pressure gauge to check every two weeks, and the pressure should be kept in the range of 2.2-2.5 bar; if the tire shoulder wear is serious, it is necessary to do four-wheel alignment detection, focus on checking whether the caster angle is in the range of 2°-4°, and it is recommended to do full vehicle alignment every 20,000 kilometers to avoid excessive tire wear; if there are cracks on the tire sidewall, it means the tire is aging. You can use an ultraviolet detector to check the degree of rubber aging. If the tire has been used for more than 5 years, even if the wear is not serious, it is recommended to replace it in time to avoid the risk of tire blowout. Difficult starting problems often occur in vehicles parked in winter or for a long time. When many car owners encounter this situation, they often don’t know where to start. In fact, difficult starting is mainly related to three components: first, battery loss. In low temperature in winter, the battery activity decreases, which is prone to power loss. You can use an intelligent charger for pulse charging. It is recommended to check the battery internal resistance every six months. If the internal resistance is greater than 150 mΩ, the battery needs to be replaced in time; second, ignition system failure. Use a digital multimeter to detect the spark plug ignition voltage. When the voltage is lower than 20 kV, the iridium spark plug should be replaced to improve ignition efficiency; third, carbon deposition in the intake system. After long-term driving, carbon deposition is easy to accumulate in the intake port, affecting intake efficiency. It is recommended to use intake port cleaning agent for deep cleaning every 5,000 kilometers, which can effectively improve starting performance. In addition, a regular maintenance plan is crucial. Replacing oil every 5,000 kilometers + replacing air filter every 10,000 kilometers can effectively prevent 90% of maintenance problems. It is particularly reminded that tire replacement must match the original factory specifications, and it is recommended to choose original factory accessories for engine maintenance, which is the key to ensuring the long-term stable operation of the vehicle. As long as you master these skills, you can easily deal with common problems in automobile maintenance and keep the vehicle in the best condition at all times.
