Reasons Why the Brake Pedal of a Buick Becomes Hard to Press Down

What is the recommended mileage for the first maintenance of a new car?

It is recommended to perform the first maintenance for a new car at 5,000 kilometers or six months. Below are some considerations for the first maintenance of a new car: 1. Prepare the user manual and vehicle registration certificate for the maintenance. 2. Once the vehicle enters the maintenance workshop, it is best to follow along personally. This allows you to observe the entire maintenance process, especially to monitor the materials used by the maintenance workers and their work attitude. 3. After the normal maintenance is completed, urge the maintenance technician to address any other previously identified issues. Ensure that necessary parts are replaced and not just patched up, as this is within the free warranty period. 4. It is advisable to bring along an experienced driver or at least a relative or friend during the first maintenance for assistance. 5. Before maintenance, organize the items in the car. It is best to keep valuable small items at home or carry them with you, such as mobile phones, laptops, Bluetooth headphones, etc., to prevent loss.

7

2

Share

Can C1 directly apply for A2?

Driver's license C1 cannot directly apply for A1 or A2 models, but can directly apply for upgrading to A3, B1 or B2. To upgrade to A2, the applicant must have held a B1 or B2 license for more than three years with no full-point records in the previous two cycles, or have held an A1 license for more than one year with no full-point records in the previous cycle. According to the new regulations, the A2 (tractor) driver's license cannot be obtained directly, but only through upgrading. C1 driver's license: The C1 driver's license allows driving small and micro passenger cars, light and micro trucks; light, small and micro special operation vehicles. C1 driver's license cannot drive: Large buses, tractors, city buses, medium buses, large trucks, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, trams, etc.

17

2

Share

What is the role of OBD in a vehicle?

OBD in diesel vehicles stands for "On-Board Diagnostics." Below are the functions of OBD: 1. OBD determines specific faults based on specific algorithms. The main purpose of this system is to monitor the engine while driving. Once the exhaust emissions exceed the standard, the malfunction indicator light will illuminate, and fault codes will be stored. 2. If the exhaust emissions exceed the standard, the malfunction indicator light will turn on to alert the owner to perform repairs. Trucks are required to undergo an annual OBD emissions test, and failure to pass will result in not receiving the compliance certification. 3. The useful information obtained from the system's self-diagnosis can assist in vehicle maintenance and repairs. Technicians can use the manufacturer's specialized equipment to read fault codes, enabling quick fault localization for efficient vehicle repairs and reducing the time required for manual diagnostics.

13

5

Share

What are the Three Filters in Car Maintenance?

Car three filters refer to the air filter, fuel filter, and oil filter. The "three filters" play a filtering role for air, oil, and gasoline in the car engine, thereby protecting the engine. 1. Air filter: Ensures the air entering the engine is clean. There is a lot of dust suspended in the air, mainly composed of silicon dioxide, which is a substance harder than metal. Installing an air filter can reduce the wear of parts such as cylinders, pistons, and piston rings. If a car does not install it, cylinder wear will increase by 7 times, piston wear by 3 times, and piston ring wear by 8 times. Therefore, modern car engines are equipped with air filters at the carburetor (or the intake control device of fuel injection engines). 2. Fuel filter: Ensures the fuel is clean and prevents vapor lock. During the storage, transportation, and refueling process of gasoline, it is inevitable to mix in some impurities and water. These impurities are brought into the fuel supply system and engine cylinders with the fuel, accelerating cylinder wear. Before gasoline enters the fuel pump, it must be filtered to ensure the normal operation of the fuel supply system. 3. Oil filter: Filters the oil to ensure the normal operation of the engine, and is the most important among the three filters. During the use of internal combustion engines, mechanical impurities such as dust, metal shavings, and carbon deposits will continuously mix into the oil. At the same time, the oxidation of oil by air and combustion exhaust gases will gradually produce gum. The mixture of mechanical impurities and gum will also form sludge, which not only accelerates the wear of moving parts but also easily causes oil circuit blockage. To ensure the cleanliness of the oil, the engine is equipped with an oil filter in the lubrication system.

2

1

Share

Is the car's braking system front or rear wheel?

Automobiles utilize braking on both front and rear wheels, with the driving wheels typically applying greater braking force than the non-driving wheels. Here's additional information: 1. For front-wheel-drive vehicles like sedans, the front wheels provide primary braking while the rear wheels assist. The parking brake acts on the rear wheels. 2. The automotive braking system, also called the automotive stopping system, serves to: forcibly decelerate or stop moving vehicles as required by drivers; maintain stationary vehicles on various road conditions (including slopes); and stabilize speed during downhill driving. 3. Currently, most domestic automakers employ front-disc-rear-drum braking systems for medium and small production vehicles, though some models feature four-wheel disc brakes. Compared to drum brakes, disc brakes offer more advanced technology, lighter weight, superior heat dissipation, better braking performance, and enhanced adaptability to complex weather and road conditions.

13

5

Share

What to Do When the Car Still Rolls Despite the Handbrake Being Engaged?

Here are the reasons why a car might still roll despite the handbrake being engaged: 1. The brake clearance is too large, reducing the pressure of the friction pads against the drum or disc when the handbrake is applied. 2. The handbrake is not fully engaged. 3. If the car rolls only a short distance, it may indicate an issue with the engagement point between the handbrake and foot brake. 4. The slope is too steep, or the road surface is too smooth. Here are the solutions to prevent rolling: 1. If the car is stuck on a slope and starts to roll backward, the first thing the driver should do is stay calm and not panic. Quickly press the foot brake to stop the car, then gently pull the handbrake and slowly release the foot brake. It is best to keep the foot on the foot brake until the handbrake is confirmed to be securely engaged before releasing the foot brake.

8

1

Share

Reasons Why the Brake Pedal of a Buick Becomes Hard to Press Down

What is the recommended mileage for the first maintenance of a new car?

Can C1 directly apply for A2?

What is the role of OBD in a vehicle?

What are the Three Filters in Car Maintenance?

Is the car's braking system front or rear wheel?

What to Do When the Car Still Rolls Despite the Handbrake Being Engaged?

What are the differences between the Red Badge Civic and the regular Civic?

Where to Add Coolant for the Phaeton?

Can Seat Modifications Pass Annual Inspection?

Which Gear is for Forward Movement in an Automatic Transmission?