Where are Great Wall Motors engines produced?

What is the Difference Between Gasoline Grades?

Taking 92-octane and 95-octane gasoline as examples, the specific differences between gasoline grades are as follows: 1. Applicable compression ratio: Vehicles with a compression ratio between 8.5-9.5 should generally use 92-octane gasoline, while cars with a compression ratio greater than 9.5 should use 95-octane gasoline. 2. Octane rating: 92-octane gasoline has a lower octane rating than 95-octane gasoline. Specifically, 92-octane gasoline contains 92% isooctane, while 95-octane gasoline has an octane rating of 95%. The gasoline grade represents the octane number of the gasoline. For example, 92-octane gasoline consists of approximately 92% isooctane and 8% n-heptane. Since isooctane has better anti-knock properties while n-heptane has poorer anti-knock performance, a higher octane number indicates better anti-knock properties of the gasoline.

6

5

Share

Where is the spark plug located in a Chery car?

The spark plug in a Chery car is generally located at the top of the engine cylinder and can be clearly seen after removing the high-voltage ignition coil. Spark plug replacement process: Open the hood, lift the plastic cover of the engine, remove the high-voltage distributor wires, and mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris such as leaves or dust and ensure they are thoroughly cleaned. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the removed high-voltage distributor wires in the firing order and secure the cover. Spark plug replacement interval: Under normal maintenance conditions, spark plugs should be replaced every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the user manual. Platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers.

2

1

Share

Will an Automatic Transmission Car Roll Back on a Slope?

Automatic transmission cars are prone to rolling back when encountering steep slopes, while on gentle slopes, the occurrence of rolling depends on the vehicle's performance. Below are detailed introductions to the gears of an automatic transmission car: 1. The R gear is the reverse gear. Engaging this gear connects the hydraulic system's reverse oil circuit, causing the drive wheels to rotate in reverse for backward movement. Do not forcibly shift to the "R" gear when the vehicle is not completely stopped, as this may damage the transmission. 2. The N gear is the neutral gear. When in neutral, the planetary gear system idles and cannot output power. 3. The D gear is the drive gear. When the gearshift lever is in this position, the hydraulic control system automatically connects the corresponding forward gear oil circuit based on throttle opening and vehicle speed signals. It can automatically shift up or down with changes in driving speed, achieving automatic transmission functionality. 4. The P gear is the parking gear. It uses a mechanical device to lock the rotating parts of the car's tires, preventing the vehicle from moving.

17

4

Share

What does cold start mean for a car?

Cold start of a car refers to starting the engine when it has been shut down for a period of time and its internal temperature has reached the ambient temperature. In contrast, there is also hot start of the engine, which means starting the engine shortly after it was last shut down while there is still relatively high residual heat inside. Cold starting an engine is more difficult than hot starting, especially when the ambient temperature is very low and the fuel is diesel. Car ignition starting method: 1. Insert the key: Get in the car and insert the key, turn the key to the second power-on position for ignition, and wait for the system self-check to complete; 2. Start the car's engine: Shift the gear lever from P to N; release the brake and start the car's engine; 3. Start moving: Press the brake pedal with your foot, shift the gear lever from N to D, release the brake and press the accelerator to start moving.

14

0

Share

What Causes Jerking in Mercedes-Benz 7-Speed Transmission?

Transmission jerking can generally be attributed to four main causes: 1. Solenoid valve issues: The solenoid valve contains a small valve core that operates via electrical current, similar to the working valve in the valve body. This can lead to unstable oil pressure regulation and uneven shifting. 2. The vehicle's computer has a self-learning function for driving habits, but this doesn't always result in jerking. This situation is relatively rare, and usually, resetting the learning values can resolve it. 3. Internal valve body obstruction: The valve body has very high requirements for its working environment. Even minor contaminants, including fine powder, can affect the smooth operation of the shift valves inside the valve body. 4. Poor piston return in the transmission can also cause jerking (this is less common and typically an intermittent issue).

10

5

Share

Can a C1 License Holder Ride a Motorcycle?

To operate a motorcycle, the driver must hold a D, E, or F driver's license, so a C1 license does not permit riding a motorcycle. Permitted vehicle types for a C1 license: The C1 license allows the operation of small and mini passenger vehicles, light and mini cargo vehicles, as well as light, small, and mini special-purpose vehicles. Small passenger vehicles must have a seating capacity of 9 or fewer. Vehicles not permitted with a C1 license: large buses, tractor units, city buses, medium buses, large trucks, regular three-wheeled motorcycles, regular two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. Additionally, a C1 license does not permit driving vehicles with more than 9 seats or trucks with a total length exceeding 6 meters. What is a C1 license: The C1 license is one of the classifications for motor vehicle driver's licenses. It permits the operation of small and mini passenger vehicles, light and mini cargo vehicles, as well as light, small, and mini special-purpose vehicles. Small passenger vehicles must have a seating capacity of 9 or fewer. Age requirements: The minimum age to apply for a C1 license is 18 years old, with no upper age limit. However, applicants aged 70 or older must pass tests assessing memory, judgment, and reaction abilities.

7

0

Share

Where are Great Wall Motors engines produced?

What is the Difference Between Gasoline Grades?

Where is the spark plug located in a Chery car?

Will an Automatic Transmission Car Roll Back on a Slope?

What does cold start mean for a car?

What Causes Jerking in Mercedes-Benz 7-Speed Transmission?

Can a C1 License Holder Ride a Motorcycle?

Where is the fuel filler switch on the Mercedes-Benz G63?

What Causes Lack of Power in BMW 528 Acceleration?

What are the common faults of the CRV hybrid transmission?

Where to Check the Oil Level for the First Maintenance of a Cayenne?