What Causes Abnormal Engine Noise During Cold Start?

How long after applying window film can the windows be used?

It is best to avoid rolling the car windows up and down for 5 to 7 days. After applying car window film, the heat-insulating film needs time to firmly adhere to the window. During this period, opening and closing the windows can cause the edges of the newly applied film to curl, and the film, which hasn't fully bonded yet, is prone to displacement. Here is some relevant information: 1. Window film can block direct sunlight from the driver's line of sight, especially during midday when external glare significantly affects driving visibility. Strong light can cause temporary blindness, and the film effectively filters out this glare. 2. Additionally, some window films can reduce the amount of ultraviolet rays that enter the car directly. Window film can also prevent the shattering of window glass into fragments, which could injure passengers inside the car. Flying glass shards are undoubtedly a ticking time bomb, and the film acts as a protective layer that holds the glass together, preventing shards from scattering even if the glass breaks.

11

2

Share

How to Deal with the Sour and Musty Smell in Car Air Conditioning?

For a sour and musty smell in the car air conditioning, it is recommended to promptly clean the evaporator (the air conditioning system should generally be cleaned once a year, preferably before the summer season), and also replace the air filter and perform a thorough cleaning of the air conditioning system. Below is a detailed explanation: 1. Possible Causes: The sour smell in car air conditioning may be due to unclean air filters, dirty air ducts, or accumulated dust on a damp evaporator. 2. Hazards of Contaminants and Solutions: (1) A large amount of contaminants and dust can breed various molds harmful to human health. (2) Proper use of the air conditioning system can effectively keep the evaporator dry, reducing the growth of bacteria and mold.

9

3

Share

How to Reset the Maintenance Light on a Volkswagen?

To reset the maintenance light on a Volkswagen, follow these steps: Turn off the car key and wait until all the dashboard lights go out. Then, press and hold the reset button on the right side of the dashboard with your left hand. While keeping the button pressed, turn on the ignition with your right hand (do not start the engine). Continue holding the button until the maintenance light automatically turns off. Below is some relevant information about the maintenance light: 1. The maintenance light is a reminder function set by the car manufacturer to alert the owner to perform maintenance at certain mileage or time intervals. It appears in the form of a dashboard or screen message or an indicator light. Resetting the maintenance light means clearing the reminder information after maintenance is completed, essentially resetting the message. 2. The original purpose of the maintenance light is to remind the car owner to perform maintenance as soon as possible. Therefore, the owner should promptly visit a 4S shop for maintenance. After the maintenance is completed, the 4S shop will use a diagnostic tool to reset the maintenance light. The quickest and most accurate method to clear the maintenance reminder light is by using a diagnostic tool. Since most car owners do not have such equipment, it is recommended to have the reminder light cleared at a 4S shop after maintenance or visit an external 4S shop for resetting.

8

0

Share

What to Do If the Car Sunroof Leaks?

First, check if the window waterproof strip is aged or loose, and replace it if necessary; inspect whether the door drainage holes are blocked, and clear them if they are. In most cases, sunroof leaks are caused by clogged sunroof drainage holes. A leaking sunroof can wet the roof trim, and in severe cases, water may even "pour" from the sunroof into the cabin. Here are detailed steps: 1. To prevent water from entering the trunk, pull the sealing strip outward to see if it comes off. If it is loose, apply sealant at the junction between the body and the sealing strip and reinstall it. 2. If the trunk sealing strip is aged, replace it. If water enters the cabin through the tail light sealing strip, replace the tail light sealing strip or apply special waterproof sealant at the seam between the tail light and the body. 3. Before the rainy season arrives, conduct a detailed inspection of all potential leakage points on the vehicle and replace any aged or poorly sealed components. Taking preventive measures ensures a dry interior environment during rainy days.

5

3

Share

How to Test an Ignition Coil?

Testing methods for an ignition coil are as follows: 1. Turn the vehicle's ignition switch to the ON position and unplug the ignition coil connector; 2. Use a multimeter to measure pin 3 with one probe and ground with the other; 3. Unplug the ignition coil connector, measure pin 1 with one probe and pin 5 of the ECU with the other; 4. Unplug the ignition coil connector, measure pin 2 with one probe and pin 2 of the ECU with the other; 5. Use a multimeter to check if the resistance of the sensor's primary coil is approximately 0.9 ohms. Precautions for using an ignition coil include: 1. Avoid exposing the ignition coil to heat or moisture; 2. Do not turn on the ignition switch when the engine is not running.

3

4

Share

What are the dimensions for reverse parking in a driving practice area?

The standard dimensions for the garage in reverse parking are as follows: The garage is 5.25 meters long and 2.3 meters wide. The total length of the road is 15.9 meters, with a single side length of 6.8 meters and a width of 5.8 meters. Evaluation criteria for reverse parking: Failing to follow the prescribed route or sequence results in disqualification; the vehicle body crossing the line results in disqualification; failing to enter the garage results in disqualification; stopping midway results in disqualification; exceeding 4 minutes results in disqualification. Reverse parking mnemonic: Reversing into and out of the garage isn't hard, fasten your belt, shift gears, and flash the left light. Press the clutch and release the handbrake, slowly lift the clutch to start gently. Align the car body by watching the right line, the left mirror's vertical gap follows the right line. Stop when the front horizontal line aligns with your shoulders, shift into reverse gear and release the clutch. When the left mirror covers the horizontal line corner, turn the steering wheel fully to the right. Watch the left mirror for the garage line, turn back one circle at a 30-degree angle, and when the car aligns with the line, straighten the steering wheel with two full turns. When the left mirror covers the garage's front corner, press the clutch and brake. Shift into first gear to exit the garage, turn the steering wheel fully to the left when the car head touches the line. Stop the car when the car head covers the line, keep the steering wheel steady and reverse the car. Watch the right mirror for the garage line, turn back one circle at a 30-degree angle, and when the car aligns with the line, straighten the steering wheel with two full turns. When the left mirror covers the garage's front corner, press the clutch and brake. Shift into first gear to exit the garage, turn the steering wheel fully to the right when the car head touches the line. Stop the car when the car head covers the line, adjust the car body skillfully. The new garage has no poles to look at, only markings on the ground. The garage length is much shorter compared to the current one, just enough for a car to fit completely. Currently, the test involves two garages on the left and right. Starting from 2013, it was only one garage. The process involves reversing into the garage from the right, then driving out to turn left, reversing back in, and finally driving out to return to the starting point. This process is much simpler, omitting the current test's step of moving the car within the garage.

18

3

Share

What Causes Abnormal Engine Noise During Cold Start?

How long after applying window film can the windows be used?

How to Deal with the Sour and Musty Smell in Car Air Conditioning?

How to Reset the Maintenance Light on a Volkswagen?

What to Do If the Car Sunroof Leaks?

How to Test an Ignition Coil?

What are the dimensions for reverse parking in a driving practice area?

How to Check Mileage on Tesla Model Y?

What are the lines on the rear windshield?

How Long Do Truck Clutch Plates Generally Last?

What is the meaning of a black license plate with the character 'Ling'?