What Causes Abnormal Noise When Releasing the Clutch?

How to Check the Production Date of Maxxis Tires?

Tire production dates are indicated by a four-digit number, which is printed on the sidewall of the tire. The first two digits represent the week of production, and the last two digits indicate the year. For example, the number 1019 means the tire was produced in the 10th week of 2019. Here are some usage recommendations for tires: 1. When purchasing tires, always check the production date. Avoid buying tires with production dates that are too old. 2. Tires are made of rubber and will age even if not used. 3. Regularly check the tire pressure and inspect the tire surface for any damage during normal use. 4. The sidewall of a tire is relatively fragile. If the sidewall is scratched or punctured, it cannot be repaired. It is recommended to replace tires every four years, even if the mileage driven within those four years is low.

18

2

Share

Should You Signal or Brake First When Turning in Subject 3?

When turning in Subject 3, you should signal first and then brake. Signaling first is mandatory because traffic laws require the use of turn signals when turning, and you must activate the turn signal at least 50 meters before the intersection to alert vehicles behind you. Therefore, you should signal before slowing down. Additional information about Subject 3 is as follows: 1. Test Content: For large buses, tractors, city buses, medium-sized buses, large trucks, small cars, small automatic transmission cars, low-speed trucks, and small automatic transmission cars for the disabled, the test includes preparation before starting, simulated nighttime lighting test, starting, driving straight, shifting gears, changing lanes, parking by the roadside, going straight through intersections, turning left at intersections, turning right at intersections, crossing pedestrian crossings, passing school zones, passing bus stops, meeting oncoming traffic, overtaking, making U-turns, and nighttime driving. The test content for other permitted vehicle types is determined by the provincial traffic management authorities of the public security department. 2. Large Vehicles: For large buses, tractors, city buses, medium-sized buses, and large trucks, provincial traffic management authorities of the public security department should add complex road driving test content, such as mountainous areas, tunnels, and steep slopes, based on actual conditions.

8

1

Share

What to Do When the EA888 Engine Cooling System is Insufficient?

Here is more information about the EA888 engine: 1. The EA888 series engines include two displacements: 1.8L and 2.0L. The 1.8TSI has a maximum power of 118kw at 5000-6200rpm and a maximum torque of 250Nm at 1500-4500rpm. The 2.0TSI can reach a maximum power of 147kw at 5100-6000rpm and a maximum torque of 280Nm at 1700-5000rpm. 2. The mechanical structures of these two displacement engines are basically the same, with the difference lying in the length of the connecting rods between the crankshaft and pistons. The connecting rods of the 2.0TSI are shorter than those of the 1.8TSI, and the crankshaft radius is increased to enhance the displacement.

16

4

Share

Can the EA211 spark plug not use double platinum?

EA211 spark plugs can use double platinum. The lifespan of platinum spark plugs is 5 times that of ordinary spark plugs, and the average lifespan of double platinum spark plugs can reach 160,000 kilometers. The following is an introduction to the advantages of double platinum electrode spark plugs: 1. Advantages of platinum electrode spark plugs: (1) Improved ignition performance. (2) Enhanced spark performance. (3) Easily stabilizes within the optimal temperature range between self-cleaning combustion and incandescent combustion. (4) Expanded thermal range. (5) Excellent durability. 2. Types of platinum electrode spark plugs: (1) In terms of materials, they mainly include: nickel alloy, platinum, iridium, etc., all of which have good conductivity. (2) The electrode structures of spark plugs include: single-pole, double-pole, triple-pole, and quadruple-pole, etc.

6

1

Share

Why is the steering wheel locked and the key unable to turn?

The steering wheel is locked and the key cannot be turned because the automatic locking function of the steering wheel has been activated. Here are the relevant explanations: 1. Steering wheel anti-theft function: The steering wheel lock is a simple anti-theft feature. When the car is turned off, if the steering wheel is turned left or right or the wheels are not aligned when parked, the force applied can cause the steering wheel to rotate, triggering the self-locking function. Even if the key is inserted and turned with force, it won't move. This is the vehicle's anti-theft system detecting a potential theft risk, thus locking the steering wheel to prevent theft. 2. Solution for a locked steering wheel: First, insert the key and press the brake, then turn the steering wheel left and right. While turning the steering wheel, turn the key to complete the unlocking procedure. If you're not familiar with the process, it might not succeed on the first attempt. Don't worry; simply remove the key and repeat the steps 1-2 times, and you should be able to unlock it successfully.

4

3

Share

What Causes the High-Pitched Squealing Sound When Braking?

The reasons for high-pitched squealing sounds when braking: 1. The wear indicator emits a sharp noise as a replacement reminder: Most vehicle braking systems are equipped with a warning mechanism to alert drivers to replace brake pads. When the brake pads wear beyond the designated warning threshold, the wear indicator produces a piercing noise to prompt the owner to inspect or replace the brake pads at a service center. Failure to replace them promptly may result in the metal wear indicator scoring fatal grooves into the brake disc, rendering it unusable. Additionally, excessively worn brake pads can lead to brake failure, potentially causing severe accidents. 2. Severely worn brake discs causing noise: If the brake disc is heavily worn, the outer edge beyond the contact area with the brake pad may develop a raised ridge relative to the friction surface. When the corner of the brake pad rubs against this raised edge of the brake disc, it can generate noise. There are generally two solutions: either have the edges of the brake pads ground down at a service center to avoid contact with the raised disc edge, or opt for a complete brake disc replacement. 3. High-pitched squealing during braking in new vehicles: Many owners assume this indicates a manufacturing defect when they hear sharp noises during braking in new cars. However, this is often part of the break-in process between new brake pads and discs. The noise occurs when braking happens to contact a hard spot in the brake pad material. Applying lubricant at a service center can help reduce this noise.

4

Share

What Causes Abnormal Noise When Releasing the Clutch?

How to Check the Production Date of Maxxis Tires?

Should You Signal or Brake First When Turning in Subject 3?

What to Do When the EA888 Engine Cooling System is Insufficient?

Can the EA211 spark plug not use double platinum?

Why is the steering wheel locked and the key unable to turn?

What Causes the High-Pitched Squealing Sound When Braking?

Does the steering wheel have a ventilation function?

What Causes Steering Wheel Bearing Noise?

What Causes Antifreeze to Change Color?

What Causes Engine Stall During Starting in Subject 2?