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What Causes Black Smoke from the Engine?

1 Answers
SophieMarie
07/29/25 10:25pm
Car engine emits black smoke due to the following reasons: 1. Vehicle overload or engine overloading; 2. Insufficient cylinder pressure or excessively low engine temperature; 3. Improper carburetor adjustment; 4. Clogged air filter element; 5. Individual cylinder misfiring or delayed ignition; 6. Poor sealing of intake and exhaust valves, resulting in inadequate compression of combustible gases, worsened combustion, and increased smoke emission. Solutions to address black smoke from the car engine include: 1. Using high-quality fuel or fuel additives; 2. Regularly cleaning the fuel lines; 3. Maintaining air filter cleanliness and replacing it periodically; 4. Promptly replacing the electromagnetic valve if the fuel filter is found to be damaged.
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More Forum Discussions

How to Replace the Battery in a Geely Key?

Method for replacing the battery in a Geely key: 1. Press the button on the side of the vehicle key to remove the mechanical key; 2. Use a tool to pry open the buckle under the key casing to separate the outer shell; 3. Once the outer shell is pried open, the key casing can be accessed; 4. Remove the old battery and replace it with a new one, then snap the casing back into place to complete the process. Geely Holding Group owns brands such as Geely Auto, Lynk & Co, Volvo Cars, Polestar, and Proton. Taking the Geely Emgrand as an example, its body dimensions are 4631mm in length, 1789mm in width, and 1470mm in height, with a wheelbase of 2650mm. The shield-shaped contour of the Geely Emgrand features a 'V' design, symbolizing the brand's entry into the high-end automotive sector with a stance of luxury, stability, and strength.
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Do You Need to Watch the Entire Car Maintenance Process?

At a regular 4S dealership, you don't need to watch the entire car maintenance process. 4S shops use standard techniques and genuine auto parts, so major issues are unlikely to occur during maintenance. The content and purpose of car maintenance are as follows: Car Maintenance Content: Modern car maintenance primarily includes servicing the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. Purpose of Car Maintenance: The purpose of car maintenance is to keep the vehicle clean and tidy, maintain normal technical conditions, eliminate potential hazards, prevent faults, slow down deterioration, and extend the service life.
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What does 5w40 engine oil mean?

5w40 engine oil represents the following: w stands for winter, the preceding 5 indicates the lowest temperature at which the engine can start, and 40 represents the viscosity level, with higher numbers indicating higher viscosity. 5w40 engine oil is suitable for electronically fuel-injected gasoline engines equipped with crankcase ventilation devices and catalytic converters operating under various conditions. Engine oil serves to lubricate and reduce friction in the engine, assist in cooling, and provide sealing to prevent leaks. It consists of two main components: base oil and additives. The base oil is the primary constituent of the lubricant, determining its fundamental properties, while additives compensate for and enhance the performance shortcomings of the base oil, imparting new characteristics, making them an essential part of the lubricant.
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Can I Renew My Driver's License If My Motorcycle Registration Is Not Cancelled?

Yes, you can renew it, but if there are any traffic violations recorded on your original driver's license, renewal is not allowed until those violations are resolved. After handling the violations, you can directly apply at the Vehicle Management Office to merge your motorcycle license with your C1 driver's license. Another scenario is when a motor vehicle driver's license has not been renewed for more than one year after its expiration date. In this case, the Vehicle Management Office will forcibly cancel the driver's license, and you will need to apply for a new one. Here is some relevant information and an introduction about driver's licenses: The full name of a driver's license is a motor vehicle driver's license, also known as a "driver's license." It is a certificate required by law for individuals who drive motor vehicles. The examination content includes three subjects: traffic laws and related knowledge, field driving, and road driving (including safe and civilized driving). Before taking each subject, you need to make an appointment (special circumstances may allow scheduling through a green channel for driving tests), and the test is taken after the appointment. The full name of a driver's license is a motor vehicle driver's license, also known as a "driver's license." It is a certificate required by law for individuals who drive motor vehicles. Driving a motor vehicle requires certain driving skills. Without these skills, driving a motor vehicle recklessly could lead to traffic accidents. Driving without a license is not permitted. However, for those who already possess safe driving skills and drive vehicles on the road, the document that permits this is the "driver's license." This indicates that a driver's license is a form of "permission certificate." The permission to drive a vehicle is granted through the issuance of a driver's license. This demonstrates that obtaining a driver's license is a formal process that must be carried out by a specialized authority.
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How to turn off the eco display on the Levin?

The method to turn off the eco display on the Levin: The Levin 1.6 eco does not have a switch function, it can only be eliminated by stepping on the accelerator or using the S gear; the Toyota Levin 1.8 eco can be turned off in the instrument menu settings. The Levin 1.6L only has eco and sport modes, with the system automatically defaulting to eco mode. The Levin is a compact sedan based on Toyota's MC platform, deeply customized for Chinese consumers. The car's dimensions are 4640 mm in length, 1780 mm in width, and 1455 mm in height, with a wheelbase of 2700 mm. In terms of power, the Levin is equipped with a turbocharged engine with a maximum horsepower of 116 hp, a maximum torque of 185 Nm, and a maximum power of 85 kW.
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When Can I Get the Vehicle License?

Generally, the vehicle license can be obtained once the vehicle registration is completed. In many cases, it can be obtained on the same day. The main functions of the vehicle license are as follows: Proof of Ownership: The "Owner's Name" section on the Motor Vehicle License is not just about the name. The owner registered on the license is the legally recognized owner of the vehicle, with the right to legally use and dispose of the property. In case of traffic accidents or financial disputes, this person is also the legally responsible party. Insurance Claim Document: For insured motor vehicles, if an accident covered by the insurance occurs, the policyholder must present the Motor Vehicle License, and it must be a valid license (i.e., the vehicle has undergone the annual inspection on time), for the insurance company to process the claim. Without a valid license, the insurance company may refuse to compensate, even if the accident occurs within the insurance coverage period.
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