Can Radiator Stop-Leak Seal Engine Block?

Should Borgward cars use 92 or 95 octane gasoline?

If it is a naturally aspirated engine, 92 octane gasoline is required, while a turbocharged engine requires 95 octane gasoline. When refueling, you can check the manufacturer's recommended gasoline grade on the fuel tank cap. It is essential to choose the correct gasoline grade for your vehicle. Below are the relevant details: 1. Most turbocharged engines require the use of 95 octane gasoline because the temperature and pressure inside the cylinders of turbocharged engines are relatively high during operation. Using lower-grade gasoline can easily cause engine knocking. 2. Knocking is an abnormal combustion phenomenon in the engine, which can be quite harmful. Severe knocking can even lead to connecting rod deformation or piston cracking. Higher-grade gasoline has a higher octane rating, and gasoline with a higher octane rating is more stable. 3. Knocking occurs during the engine's compression stroke. During this stroke, both the intake and exhaust valves are closed, and the piston moves upward to compress the air-fuel mixture. When compressed, the temperature and pressure of the mixture increase. If the gasoline is not stable enough, the mixture may ignite prematurely. The burning mixture pushes the piston downward while it is moving upward, which can negatively affect the engine's power output and fuel economy.

12

2

Share

Where to Check the Tire Date?

Here is a related introduction on how to check the production date of car tires: 1. On the sidewall of the tire, there is a set of numbers. The last four digits of this marking provide information about the production date, consisting of four digits "AABB". The first two digits "AA" indicate the week of the year, and the last two digits "BB" indicate the year. 2. For example, if the last four digits of the DOT marking on the tire are 0807, it means the tire was produced in the 8th week of 2007, which is around late February 2007. The marking 1606 indicates a production date in the 16th week of 2006, which is around mid-April 2006.

10

1

Share

What to Do When CO Emissions Exceed Standards?

CO is an intermediate product of incomplete fuel oxidation, which is produced when oxygen is insufficient. High concentration of the air-fuel mixture or uneven mixture distribution can increase CO emissions. Solutions for excessive CO emissions include: 1. Replace spark plugs: Faults in the ignition system, such as spark plugs or ignition coils, can cause excessive vehicle emissions. Poor-quality spark plugs can exacerbate emission pollution. 2. Replace with triple-side spark plugs to improve exhaust quality: Compared to single-side spark plugs, triple-side spark plugs feature a spark gap formed by multiple side electrodes and the cylindrical surface of the center electrode. This side-mounted spark gap eliminates the drawback of the side electrode covering the center electrode, thereby enhancing exhaust purification. 3. Clean spark plugs with sandpaper or a cleaning agent: Spark plugs are prone to carbon buildup and require regular cleaning.

5

Share

Why is there no sound from the car's reversing radar?

As a standard parking assistance system, the reversing radar helps us avoid dangers such as scratches and collisions during parking. The reversing radar emits ultrasonic waves through ultrasonic sensors, which reflect back after hitting obstacles and are received by the ultrasonic sensors. The controller then calculates the distance to the obstacle based on the time between the emission and return of the ultrasonic waves, and finally alerts the driver with a rapid beep from the buzzer. The reasons why the reversing radar may not produce sound include: 1. Obstacle is too low: When the obstacle is too low, the reversing radar may fail to detect its presence. 2. Obstacle is too thin: When encountering slender poles, the reversing radar may also fail to detect the obstacle. 3. Reversing radar switch is off: There is usually a switch on the central control panel inside the car that controls the reversing radar. If it is turned off, the reversing radar will not work. 4. Reversing radar wiring fault: When the wiring of the reversing radar is aged or broken, the reversing radar will not function properly. 5. Reversing radar is damaged: Components such as the reversing radar, controller, or alarm may be damaged.

19

3

Share

What is the difference between Shanghai A and Shanghai B license plates?

The differences between Shanghai A and Shanghai B license plates are: 1. Different numbering periods: Shanghai A plates were issued earlier, while Shanghai B plates were issued later. 2. Different vehicle types: Shanghai A plates are for public vehicles such as buses and trucks; Shanghai B plates are for both public and private vehicles. License plates in Shanghai include: Shanghai A, Shanghai B, Shanghai D, Shanghai E, Shanghai F, Shanghai G, Shanghai H, Shanghai J, Shanghai K, Shanghai M, Shanghai N, Shanghai C, and Shanghai R. License plates, also known as vehicle registration plates, serve the primary purpose of identifying the region to which a vehicle belongs and can be used to trace the owner and registration information of the vehicle.

6

5

Share

Why Does the Cayenne Sunroof Make Abnormal Noises?

Common reasons for abnormal noises in the sunroof are as follows: 1. Aging of the sunroof rubber seal or sealing ring. The sunroof seal is often exposed to rain or sunlight, making it prone to aging. Rubber conditioner can temporarily restore the seal's performance. The specific method is to open the sunroof fully and spray the conditioner onto the seal. 2. Loose sunroof screws. Loose screws can cause noises in the headliner and sunroof, and even pose a risk of the sunroof falling off. In this case, simply locate the sunroof screws and tighten them. 3. Dust particles in the sunroof sliding tracks. Repeated opening and closing of the sunroof can lead to dust accumulation in the track gaps. When enough dust builds up, friction occurs during operation, resulting in abnormal noises. In this case, simply remove the dust with a cloth.

17

2

Share

Can Radiator Stop-Leak Seal Engine Block?

Should Borgward cars use 92 or 95 octane gasoline?

Where to Check the Tire Date?

What to Do When CO Emissions Exceed Standards?

Why is there no sound from the car's reversing radar?

What is the difference between Shanghai A and Shanghai B license plates?

Why Does the Cayenne Sunroof Make Abnormal Noises?

How to Adjust the Tightness of Disc Brakes?

Can National 5 Vehicles Still Be Registered?

What Causes Vehicle Shaking During Startup?

Replacement Cycle for the Ford Escort Battery