How to Repair Scratches on a Car Windshield?

How to Solve the Problem of Black Smoke from Diesel Vehicles?

The solutions for black smoke from diesel vehicles are: 1. Check, clean, or replace the air filter; 2. Clean the fuel system or add fuel cleaner; 3. Visit a 4S shop to detect and confirm the root cause of the fault, then replace the damaged parts; 4. Inspect and replace the fuel injector; 5. Check the pressure of the fuel injection pump and repair or replace it. The reasons for black smoke from diesel vehicles are: 1. Clogged air filter; 2. Poor fuel quality and carbon deposits; 3. Insufficient compression force; 4. Poor performance of the fuel injector; 5. Poor performance of the fuel injection pump. Diesel engines are divided into: 1. Spark-ignition engines: Gasoline engines inject gasoline into the intake pipe, mix it with air to form a combustible mixture, which then enters the cylinder and is ignited by the spark plug to expand and perform work; 2. Compression-ignition engines: Diesel engines directly inject diesel into the engine cylinder through the fuel injection pump and nozzle, where it mixes uniformly with the compressed air in the cylinder and self-ignites under high temperature and pressure to push the piston and perform work.

19

4

Share

What is the penalty for driving at 133 km/h on a highway with a 120 km/h speed limit?

Driving at 133 km/h on a highway with a 120 km/h speed limit will result in a penalty of 3 demerit points and a fine. Safe speed on highways: Scientific research has shown that the safest speed in China is between 110-115 km/h. On highways with a speed limit of 120 km/h, the theoretically safest speed range is between 90 km/h and 110 km/h. Driving within this speed range is considered the safest. Penalties for speeding by ordinary vehicles on highways: Exceeding the speed limit by less than 10% will not be penalized; exceeding the speed limit by 10% to less than 20% will result in 3 demerit points; exceeding the speed limit by 20% to less than 50% will result in 6 demerit points; exceeding the speed limit by 50% or more will result in 12 demerit points.

17

5

Share

Can the DMV issue license plates on October 1st?

The DMV cannot issue license plates on October 1st, as it is closed during the National Day holiday. Important notes for vehicle registration: According to DMV regulations, there are three types of vehicles that cannot be registered. These include vehicles with non-compliant emissions, vehicles without proper certification, and vehicles with inconsistent VIN codes. Functions of the DMV: The DMV is primarily responsible for handling vehicle registration, modification, transfer, mortgage, and cancellation. This includes addressing issues related to vehicle and driver's license processing, handling procedures rejected by the supervisory department, inspecting business records, announcing registration information as required, supervising work discipline, and handling public complaints.

5

1

Share

What are the new regulations for the cancellation of annual inspections for private cars in 2021?

In 2021, the regulations for annual vehicle inspections have been adjusted, expanding the scope of exempted inspections and optimizing the inspection cycle. Starting from November 20, 2020, non-operational small and micro passenger vehicles (excluding minivans) with 7-9 seats and within 6 years of age have been included in the exempted inspection range. For non-operational small and micro passenger vehicles (excluding minivans) over 6 years but under 10 years of age, the inspection cycle has been relaxed from once a year to once every two years. This means that private cars only need to undergo two on-site inspections within 10 years, specifically in the 6th and 8th years. The purpose of annual inspections: The goal of annual inspections is to check the quality of the vehicle and whether all aspects of the vehicle meet the relevant regulations for road use, primarily to ensure driving safety and also to provide a safeguard for the driver's safety. Notes for annual vehicle inspections: Vehicles should undergo annual inspections within three months before the expiration of the current inspection validity period. According to relevant laws, the owner of the vehicle must first handle any related traffic violations or accidents before proceeding with the legal process to apply for the annual vehicle inspection.

14

4

Share

Does a Genuine OEM Bumper Come Pre-Painted?

If it's an OEM bumper, it comes pre-painted from the factory. Bumper Sources: Currently, there are two types of bumpers available in the market: OEM and aftermarket. OEM bumpers are supplied directly by the original manufacturer, while aftermarket bumpers are typically manufactured by secondary suppliers, some even produced by small workshops. If sourced from secondary suppliers or small workshops, these bumpers usually undergo post-production painting (only with primer). Advantages of OEM Bumpers: The advantages of OEM bumpers lie in their toughness; even under high pressure, they are less likely to deform. Additionally, since they are supplied directly by the original manufacturer, their quality is naturally better guaranteed.

1

2

Share

Does PEA Concentrate Damage Cars?

PEA concentrate will not damage cars, as it is a carbon deposit cleaning and softening agent. Precautions for using PEA concentrate: Carbon deposits are unavoidable. Currently, using PEA concentrate to remove carbon deposits is effective, but the loosened deposits will enter the engine oil. If there are too many, they may clog the oil filter. Causes of carbon deposits: Carbon deposits are black, sticky substances formed due to incomplete combustion in car engines. Generally, they occur when the engine injects overly rich fuel during idling or acceleration, leading to incomplete combustion. The unburned hydrocarbons in gasoline undergo complex cracking, polymerization, and oxidation reactions, forming solid deposits that accumulate in the engine's intake, fuel injection, and combustion chamber areas, eventually forming carbon deposits.

18

5

Share

How to Repair Scratches on a Car Windshield?

How to Solve the Problem of Black Smoke from Diesel Vehicles?

What is the penalty for driving at 133 km/h on a highway with a 120 km/h speed limit?

Can the DMV issue license plates on October 1st?

What are the new regulations for the cancellation of annual inspections for private cars in 2021?

Does a Genuine OEM Bumper Come Pre-Painted?

Does PEA Concentrate Damage Cars?

Does Anti-Fog Agent Damage Window Film?

What Are the Damages of Slamming Car Doors?

What cleaning agent should be used to clean wheel hubs?

Does driving over a pothole at 60 mph affect the car?