There are several common faults of automobile engines and their maintenance methods

The car dashboard prompts that when the coolant temperature is abnormal, you should stop the car to check whether the coolant is leaking. It should be noted that the engine should not be stopped immediately when the car is hot, nor can the coolant be filled immediately, but the engine temperature should be normal before operation. If there is a lot of coolant, the engine thermostat and fan heat dissipation fault should be ruled out.

poor engine maintenance; Poor fuel and oil quality; Insufficient combustion of the mixture;

1. Sensor problems; The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on. 2. Maintenance problems; Poor engine maintenance is the most common cause of engine failure to light up. We know that the vehicle has a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light to care about your car 3, oil quality problems; The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame.

Poor combustion of the mixture; The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the engine mixture. Poor combustion of the mixture is caused by the problem of engine carbon deposition or knocking, and these will eventually be detected by the engine's oxygen sensor and reported to the ECU, which will naturally turn on the fault light to warn of the intake air intake problem; When the engine burns, it needs to take intake, the air filter element is very important in this process, if the air filter element of the car is not clean, it will affect the air intake of the car if it is not cleaned regularly, and it will be blocked for a long time, and if it is serious, it will cause the engine failure light to turn on. pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate.

Common faults and maintenance methods of automobile engine Abstract: As an important component in the structure of automobiles, the engine can provide power for the normal operation of automobiles**. However, in combination with the actual situation, in the operation of the car, the engine will frequently fail due to a variety of factors, which seriously affects the sustainable and stable development of China's automobile industry.

There are three main types. Overhaul engine, overhaul transmission, overhaul girder (suspension) shouting.

1. Engine:

Replace the main internal parts of the engine. It mainly includes crankshafts, pistons, connecting rods, cylinder liners, valve assemblies, piston rings, piston connecting rods, valve seat inserts, crankshaft connecting rods, piston rings, timing belts (some cars do not need to be replaced by a hail if they are timing chains), engine overhaul kits (including all gaskets, oil seals, valve oil seals, cylinder gaskets, oil pan gaskets, crankshaft head oil seals, but excluding crankshaft rear oil seals), crankshaft rear oil seals, transmission front oil seals, cleaning engine waterways, cleaning water tanks, changing oil and filters.

2. Transmission:

Replace the main internal parts of the transmission. Gears, gear oil pumps, bearings, seals, locking pins, etc.

3. Girder: Girder overhaul is required only when there is a collision or fracture over time, and it is generally necessary to go on the girder correction platform to correct the girder.

Automobile overhaul has strict quality requirements. After repair, the assembly and some accessories must be tested for performance and can only be loaded after passing the test. After the overhaul, the car should be adjusted and tested in accordance with the repair technical standards, and it will be shipped out of the factory only if it meets the standards.

To this end, the automobile repair factory should have a strict production management and quality management system, perfect process equipment and a relatively high technical level. In areas with a large number of cars, it is advisable to set up factories according to different car types or different models to ensure the quality of repair and reduce repair costs.