What Causes Brake Noise in Winter?

Should the front wheels cross the stop line during parallel parking?

During parallel parking, the front wheels must not cross the stop line. According to the regulations of Subject 2 driving test, crossing the line with the vehicle body will result in a deduction of 100 points, leading to test failure. The Subject 2 test for automatic transmission vehicles includes four items: reverse parking, parallel parking, curve driving, and straight-line driving. Manual transmission vehicles have an additional item: hill start. Subject 2 is also known as the small road test. If you fail, you can retake it immediately. If you fail again, you can reschedule the test after 10 days. Deduction items for reverse parking: Exceeding 210 seconds for the task (major deduction), not following the designated route sequence (100-point deduction), failing to drive both front wheels over the control line before reversing (100-point deduction), stopping for more than 2 seconds (5 points per occurrence), failing to park properly (100-point deduction), and vehicle body crossing the line (100-point deduction). Subject 2 techniques: Right-angle turn: When driving straight, turn the steering wheel fully once the front hood covers the yellow line. Hill start and stop: Align the right side of the double-digit number on the hood or its centerline with the right edge line, keeping the tire track within 30 cm of the right edge. Use the wiper joint to align with the test pole and brake when aligned. Curve driving: After entering the curve, watch the left or right front corner of the car to follow the inner tangent of the curve, smoothly transitioning through blind spots for left or right turns, then follow the inner arc. Parallel parking: Brake when the camera bracket in front of the garage aligns with the lock button on the front door, then fully turn the steering wheel right and shift to reverse. Reverse parking: Ensure to turn the steering wheel fully left before exiting the parking space, then immediately turn it fully after passing the sensor line.

16

4

Share

What Causes Weak Braking After Replacing Brake Pads?

Newly replaced brake pads may fail to stop the vehicle properly because: the wear levels on both sides of the brake pads differ significantly, leading to uneven braking force. This can cause one side to lock up while the other side hasn't engaged fully, resulting in the car pulling to one side. Braking relies on intense friction between the brake pads and the brake drum. When driving through water, the wheels are almost entirely submerged, leaving a thin layer of water between the brake pads and the drum. This acts like a lubricant, reducing friction and making it difficult to stop the car. Additionally, water trapped inside the drum doesn't dissipate easily. This loss of braking occurs very suddenly. After exiting the water, repeatedly applying the brakes while driving will wipe away the water droplets between the brake pads and drum. The heat generated by friction will also dry them out, quickly restoring the brakes' original sensitivity. This phenomenon rarely occurs in cars with disc brake systems because the brake pads in such systems have a small surface area, and the disc is fully exposed, preventing water retention. Due to centrifugal force from wheel rotation, water on the disc will disperse automatically, ensuring the braking system functions normally. Many compact cars use a front-disc-rear-drum braking setup, which is why some brakes may fail or weaken significantly after driving through water.

15

3

Share

How to Maintain a Car?

Methods for car maintenance: 1. When washing the car, pay special attention to cleaning the interior leather seats periodically to prevent bacterial growth; 2. Wipe the car with clean water once a week, avoiding frequent visits to car washes; 3. Regularly place some activated charcoal inside the car, as vehicles emit a lot of exhaust fumes during use, which may leave residues inside; 4. Use removable floor mats in the car. If the mats are not too dirty, take them outside to shake off dust or use a vacuum cleaner with a brush attachment. For heavily soiled carpets, use a detergent; 5. The steering wheel, frequently handled, can easily get dirty. If it becomes sticky, it may affect driving comfort. Clean it with water, and adding a bit of detergent can help remove stains more easily, but ensure to wipe it dry with a towel.

13

3

Share

Where is the car spare tire located?

Car spare tires are placed under the trunk mat; some vehicles have the spare tire mounted on the rear; others have it under the chassis. A car spare tire is a backup tire prepared for emergencies when the main tire encounters problems, allowing it to be used as a replacement. Most passenger cars come equipped with a spare tire, typically of the same specifications as the original tires. The spare tire is intended for emergency use only, not for long-term use. Regardless of whether the spare tire is wide or narrow, manufacturers have specific production and usage requirements. Since spare tires are not continuously used on the vehicle and do not undergo wear, an unworn tire differs significantly from a heavily worn one. Using a spare tire on the vehicle inherently carries certain safety risks.

15

5

Share

Why Shouldn't You Get a Car with Paddle Shifters?

Paddle shifters are a feature borrowed from racing cars and adapted for non-specialized vehicles. They offer simple operation and quick shifting, making them a great aid for spirited driving. However, paddle shifters are not frequently used—beyond the initial novelty of trying them out a few times, they are generally left unused. This feature is optional; if you don't like it, you don't have to use it, and it won't affect your driving experience. Below is an introduction to the pros and cons of steering wheel paddle shifters: 1. Introduction One: Steering wheel paddle shifters are gear-shifting devices installed for cars with semi-automatic clutches. Their purpose is to eliminate the need to press the clutch pedal with your foot, allowing gear changes directly by pulling the paddle shifter. This device is widely used in racing cars. 2. Introduction Two: Since paddle shifters are located behind the steering wheel, shifting gears is very convenient and efficient. This setup is adopted in many rally races, circuit races, and even F1 events. 3. Introduction Three: If you suddenly downshift several gears at a relatively high speed, the engine RPM will rapidly increase. However, the transmission ratio will also rise sharply, causing a sudden surge in torque delivered from the engine to the wheels. This leads to a drop in RPM, resulting in sudden vehicle nosediving and jerking. Not only does this create discomfort for passengers, but frequent use of this operation can also negatively impact the transmission's lifespan.

17

3

Share

How often should the canister purge solenoid valve be replaced?

The canister purge solenoid valve does not have a fixed replacement interval. You can measure the resistance of the canister purge solenoid valve to determine its condition. If the measured value does not meet the standard, the solenoid valve needs to be replaced. If symptoms such as jerking, increased fuel consumption, or a gasoline smell occur and troubleshooting is ineffective, you should check whether the canister needs to be replaced. When the engine is running at non-idle speeds, if you occasionally hear abnormal noises, you should locate the canister purge solenoid valve in the vehicle and determine whether the noise is coming from it. If it is, there is no need to worry, as the canister purge solenoid valve produces intermittent switching sounds when the throttle is opened, which is a normal phenomenon.

8

3

Share

What Causes Brake Noise in Winter?

Should the front wheels cross the stop line during parallel parking?

What Causes Weak Braking After Replacing Brake Pads?

How to Maintain a Car?

Where is the car spare tire located?

Why Shouldn't You Get a Car with Paddle Shifters?

How often should the canister purge solenoid valve be replaced?

What is the speed limit on icy and snowy roads?

Is it necessary to print the electronic insurance policy for annual inspection?

Is it normal for the Delong X3000 to have a water temperature of 95 degrees when climbing a slope?

Why is there often a lot of dust in small cars?