Vehicle condition: 2019 Audi A3 . The car was mentioned by riders for two and a half years. The mileage was over 58,000 kilometers and the car was in good condition.
Fault description: When the car was driven for 50,000 kilometers, the vehicle showed that the oil level was low. At that time, I went to the 4S shop to add oil. After the addition, the vehicle drove more than 5,000 kilometers, and the vehicle experienced engine failure lights, burning oil, and engine shaking.
The specific situation of engine jitter
Cause 1: The carbon deposit of the engine is relatively serious, and the throttle valve is blocked, which causes the engine to jitter.
Solution 1: It is recommended that the owner go to the 4S shop or repair shop for inspection and cleaning. The throttle valve is dirty and the throttle body needs to be cleaned. In terms of cost, the price of a 4S shop is about 300-400 yuan; the price of a repair shop is about 150 yuan. It is worth noting that, if the car is cleaning the throttle body, the mileage should be around 15,000 kilometers. In addition, carbon deposit cleaning is not covered by the warranty.
Cause 2: The fuel injection system is blocked.
Solution 2: The fuel system needs to be cleaned. In terms of cost, 4S shops are about 1100-1500 yuan; the price of repair shops is about 500-700 yuan.
Cause 3: Adding inferior fuel will cause blockage of the fuel system and cause engine jitter.
Solution 3: If the fuel system is blocked by adding low-quality fuel, the fuel system needs to be cleaned, in addition to cleaning the fuel tank fuel system. The cost of cleaning the fuel system is the same as that mentioned in Solution 2. The cost of cleaning the fuel tank is about 800 yuan in a 4S shop, and about 500 yuan in a repair shop. Failures caused by this reason are not covered by the warranty and are charged.
Failure reason 4: The engine lacks cylinder, the spark plug ignition effect is not good or the ignition coil does not work well.
Solution 4: Car owners can go to a 4S shop or repair shop for spark plug inspection,Determine whether the ignition coil needs to be replaced. In terms of costs, the 4S shop can be replaced free of charge during the warranty period. In the case of out of guarantee, the cost of a spark plug in the repair shop is about 100-150 yuan, and if it is replaced at a 4S shop, it is about 200 yuan. The price of the ignition coil in the repair shop is 300-400 yuan; the price in the 4S shop is about 500 yuan.
Oil burning specific situation
Fault reason 1: Product quality problems, such as the unreasonable setting of the vehicle's oil and gas separation device, causing carbon deposits in the piston groove, resulting in reduced oil.
Solution 1: Regularly clean the throttle valve, intake pipe and carbon deposits in the cylinder. In terms of costs, the repair shop costs 350-550 yuan, and the 4S shop is about 850 yuan.
Cause 2: There are too many kilometers, and the parts are aging normally, such as valve oil seal piston ring, the inner wall of the cylinder is worn out or the piston ring is stuck.
Solution 2: The oil burning caused by this reason needs to be overhauled. In terms of costs, the price of a repair shop is generally around 13,000 yuan, and the price of a 4S shop is around 30,000 yuan.
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