How often should the urea filter be replaced?

What kind of engine oil should be used for BMW 118?

BMW 118 now generally uses original engine oil, with three models available: 5w30, 0w40, and 0w30, all of which can be used. Introduction to engine oil: Engine oil, also known as engine lubricant (English name: Engine oil), has a density of approximately 0.9110 kg/m3. It serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption for the engine. It is hailed as the 'blood' of the car. Composition of engine oil: Engine oil consists of two parts: base oil and additives. The base oil is the main component of lubricating oil, determining its basic properties. Additives can compensate for and improve the shortcomings of the base oil's performance, endowing it with certain new properties, making them an important part of lubricating oil.

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How long is the validity period of a car's vehicle license?

The vehicle license is valid indefinitely, but it still requires annual inspection. The inspection validity period is marked on the supplementary page, which essentially indicates the deadline for the annual inspection. Therefore, the validity period of the vehicle license is also tied to the annual inspection. For vehicles exempt from inspection for the first 6 years, they are exempt from on-site testing during this period, and annual inspection only starts from the sixth year, with the vehicle license valid for 5 years. For vehicles older than 6 years, they require annual inspection, with the vehicle license valid for 1 year. For vehicles older than 15 years, they require biannual inspections, with the vehicle license valid for 6 months. Relevant information about the driver's license is as follows: 1. Introduction: The People's Republic of China Motor Vehicle Driver's License, commonly referred to as the driver's license or 'driver's permit,' is a mandatory certification for motor vehicle drivers under the laws of the People's Republic of China. 2. Examination Content: The test subjects include traffic regulations and related knowledge, field driving, and road driving (including safe and civilized driving).

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Why does the malfunction indicator light come on after refueling?

After refueling, if the engine malfunction indicator light comes on, it is generally caused by fuel-related issues. Poor fuel quality can lead to the oxygen sensor reporting a fault after combustion in the engine. It is recommended to visit a 4S shop for a detailed inspection to avoid affecting vehicle performance. Below are relevant explanations: 1. Reasons for the malfunction indicator light: There are many reasons why the engine malfunction indicator light may come on, such as a fault in the purge solenoid valve controlling fuel vapor emissions, a malfunctioning air flow meter, faulty ignition coils, a thermostat issue, engine problems, a faulty three-way catalytic converter, oxygen sensor failure, or excessive carbon buildup on the electronic throttle. 2. How to handle the malfunction indicator light: When the engine malfunction indicator light comes on, you can first observe the situation yourself. If it is a major fault, it may be accompanied by symptoms such as loss of engine power, severe shaking, rising water temperature, and multiple warning lights on the dashboard. In such cases, it is necessary to stop the vehicle and wait for professional assistance.

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Can Fuel Injectors Be Repaired?

Clogged fuel injectors can be cleaned and repaired, but if issues persist after cleaning, replacement is necessary. Faulty fuel injectors can lead to dirty blockages, causing issues such as distorted injection, poor atomization, inaccurate fuel delivery, reduced power, poor acceleration, and excessive emissions. Methods to test and determine the condition of electromagnetic fuel injectors: The key is to check whether the internal fuel passages are blocked, whether the needle valve fails to close tightly, and whether the electromagnetic coil is functioning properly. During testing, you can first use the cylinder cut-off method to identify which cylinder's electromagnetic fuel injector is faulty, then follow these steps: First, connect a 12V power supply to one end of the injector's wiring socket and intermittently ground the other end to the engine body, observing for slight vibrations and listening for a faint clicking sound. If none are detected, check for faults in the wiring connected to the injector. Next, inspect whether the fuel supply line is blocked. Then, check if the injector's fuel inlet is clogged, and finally, test whether the electromagnetic coil is open-circuit and whether the injector nozzle is blocked.

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What is the normal valve clearance for the Geely 4G15 engine?

Geely 4G15 engine valve clearance is recommended to be 0.03 for intake and 0.05 for exhaust. It is best to adjust when the engine is cold, otherwise the error will be significant. Introduction to valve clearance: The gap between the end of the valve stem and the components of the valve transmission group is called valve clearance. Origin of valve clearance: When the engine is running, the valves will expand due to the increase in temperature. If there is no gap or the gap is too small between the valve and its transmission components in the cold state, the thermal expansion of the valve and its transmission components in the hot state will inevitably cause the valve to not close tightly, leading to gas leakage during the compression and power strokes, thereby reducing power output. In severe cases, it may even make the engine difficult to start. To eliminate this phenomenon, a certain gap is usually left between the valve and its transmission mechanism during cold assembly of the engine to compensate for the expansion of the valve when heated. This gap is called valve clearance.

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What causes the jerking sensation when starting a Mercedes GLA?

Mercedes GLA starting with a jerking sensation may be due to the following reasons: Transmission internal contamination: Transmission impact and jerking are often not caused by internal valve body damage, but by stubborn dirt and impurities inside, especially when these contaminants accumulate in the valve body, forming blockages that prevent effective oil pressure regulation, leading to jerking, impact, and slippage issues. The traditional solution is to replace the transmission fluid. Engine intake system malfunction: The engine intake system requires not only fuel but also air. If components like the air filter or throttle body are clogged or malfunctioning, leading to insufficient air intake, the car may experience weak acceleration, slow speed increase, and a jerking sensation. The ignition system should not be overlooked either; if spark plugs misfire, leak, or fail to atomize properly, it can also affect engine acceleration.

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How often should the urea filter be replaced?

What kind of engine oil should be used for BMW 118?

How long is the validity period of a car's vehicle license?

Why does the malfunction indicator light come on after refueling?

Can Fuel Injectors Be Repaired?

What is the normal valve clearance for the Geely 4G15 engine?

What causes the jerking sensation when starting a Mercedes GLA?

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