What is the difference between the 230 and 280 engines?

What to Do If You Fail the Subject 2 Driving Test for the First Time?

If you fail the Subject 2 driving test on your first attempt, you are allowed one retake. If you do not take the retake or fail it again, the current test session ends, and you must reschedule the test after ten days. Within the validity period of your driving skill test permit, you can schedule the Subject 2 and Subject 3 road driving skill tests up to five times. If you fail the fifth attempt, any previously passed subjects will be invalidated. Additional Information: Passing Criteria: The test is scored out of 100, with deductions of 20, 10, or 5 points for various mistakes. To pass: (1) For large buses, tractors, city buses, medium buses, or large trucks, a score of 90 or above is required; (2) For other vehicle types, a score of 80 or above is needed.

3

4

Share

Which Light to Watch When Making a Right Turn in a Car?

When making a right turn at an intersection, the driver should first check if there is a dedicated arrow signal for right turns and follow the rule of stopping at red and proceeding at green. Precautions for making a right turn in a car: Before changing lanes for a right turn, the driver should signal in advance. This serves as a warning to vehicles behind as well as to electric bikes, bicycles, and pedestrians. Always check for oncoming straight traffic from the left and yield to them. Observe traffic signals carefully and follow traffic rules. Car turning techniques: Follow the outside-inside-outside principle for turning. To navigate a curve quickly and minimize centrifugal force, make use of the full width of the road and take a wide arc, making the turn as straight as possible. For uphill curves, ease off the throttle and downshift before entering the curve, then accelerate quickly to exit. Before entering the curve, release the throttle to allow the car to enter at a higher speed along the outside of the curve, then downshift one or two gears. Choose the best line and correct the direction while gently applying the throttle.

19

5

Share

What Causes the Idle Speed to Increase When Engaging Gear?

Introduction to the causes of increased idle speed when engaging gear: Malfunction of the idle control valve: Normally, electronic fuel injection engines rely on the idle control valve to determine the normal idle speed. During driving, the electronic control unit (ECU) calculates based on the information transmitted by the engine to adjust the intake air volume, thereby altering the engine's idle speed. However, if oil contamination or carbon deposits affect the idle control valve, the ECU cannot receive accurate information, leading to improper idle speed regulation and resulting in excessively high idle speed. You can check whether the idle control valve makes any sound during operation; if there is no sound, it indicates a malfunction. Intake system leakage: Maintaining normal idle speed requires strict control of the intake air volume. When there is a leak in the intake system, the ECU cannot perform accurate calculations, leading to an increase in intake air volume. In such cases, the idle speed will also be excessively high. Fuel injector leakage or clogging: When the fuel injector leaks or becomes clogged, it causes issues in the vehicle's fuel injection system, resulting in either excessively high or low concentration of the air-fuel mixture inside the engine. This inevitably affects the cylinder's operation, leading to unstable idle speed.

3

5

Share

Where to Get a Car Remote Key

Car 4S shops can provide remote keys. Below are the specific functions of car remote keys: 1. Close windows after turning off the engine: Press and hold the lock button on the remote key to close the windows. This feature may also be available on ordinary family cars. 2. Find the car in a parking lot: Some car keys have a dedicated car-finding button. For certain vehicles, pressing the lock button twice will make the car emit a beep to indicate its location, making it easier to find the car quickly in crowded parking areas. 3. Automatically open the trunk: Many car models have a trunk-opening button on the remote key. Press and hold the trunk unlock button to open the trunk automatically. 4. Keyless entry: You need to carry the car key. When the key is near the car, it will automatically match the car's decoder. Press the unlock button on the car door handle to unlock the car.

17

3

Share

Symptoms of Too Much or Too Little Transmission Fluid

When there is too much transmission fluid, starting the vehicle requires the gears to overcome the resistance of the fluid, leading to power loss. Additionally, the agitation of the gears causes the fluid to foam, introducing air into the fluid passages and reaching the clutch. When shifting into D gear, the presence of air between the clutch plates prevents them from pressing tightly, resulting in clutch slippage. When the transmission fluid is insufficient, acceleration power is reduced, and internal transmission components may overheat and fail. Signs that transmission fluid needs replacement include: vehicle shaking, rough gear shifting; transmission overheating warning on the dashboard; engine stalling; and unusual noises. Methods for replacing transmission fluid are as follows: Unscrew the drain plug at the bottom of the transmission to drain the old fluid before refilling. Remove the transmission oil pan to drain and refill the fluid: This method is more thorough than the previous one, as it allows for the removal of debris from the bottom of the oil pan. Use a circulation machine to replace automatic transmission fluid: A smart circulation machine enables dynamic fluid replacement, filtering and cleaning sludge and impurities from the automatic transmission. Long-term failure to replace transmission fluid can lead to: 1. Damage to the transmission's shift control mechanism; 2. Abnormal wear of gears and clutch plates inside the transmission; 3. Impaired transmission operation, resulting in damage to the transmission valve body.

8

5

Share

Why does the car throttle not accelerate and have a jerking feeling?

This situation may occur due to problems in the ignition system and intake system. Basic information: 1. Solution: If this happens, it is recommended to immediately check the ignition system and intake system. The main components of the engine ignition system include the ignition coil and spark plugs. Spark plugs are wear parts that need to be replaced regularly. 2. Related principle: Spark plugs have electrodes that can release sparks. Near the end of the compression stroke, the spark plug releases a spark to ignite the combustible mixture in the combustion chamber. The burning mixture pushes the piston downward, allowing the engine to generate power. 3. Hazards: As usage time increases, the electrode gap on the spark plug will widen. A larger electrode gap weakens the ignition energy, causing incomplete combustion of the combustible mixture in the engine. If the combustible mixture does not burn completely, it will result in reduced engine power and increased fuel consumption.

1

3

Share

What is the difference between the 230 and 280 engines?

What to Do If You Fail the Subject 2 Driving Test for the First Time?

Which Light to Watch When Making a Right Turn in a Car?

What Causes the Idle Speed to Increase When Engaging Gear?

Where to Get a Car Remote Key

Symptoms of Too Much or Too Little Transmission Fluid

Why does the car throttle not accelerate and have a jerking feeling?

Which gear should the car be in when waiting at a traffic light?

Why Does the Car Shake Violently After Starting?

Are Driving Licenses Universally Valid?

Which Light to Observe When Making a Right Turn?