How long does it take to review the study hours for Subject 2?

How long after window tinting can you not roll down the windows?

After applying window tint film to car windows, it is generally advised not to roll down the windows for 3 days. This is because during the tinting process, moisture exists between the film and the glass. Before this moisture completely dries, the adhesion of the film is not secure. The purpose is to prevent the edges of the window tint from not drying completely, which could cause the edges to loosen, preventing the film from adhering tightly to the glass and potentially leading to bubbling or other issues later on. Additional Information: 1. Avoid washing the car for three days after window tinting to prevent water from causing the film to peel off. It is recommended to wash the car before applying the tint. 2. For the first week after tinting, park the car in a sunny area to ensure that any remaining moisture under the film evaporates fully. 3. To ensure the window tint adheres firmly to the glass, avoid attaching or hanging any items directly on the tinted windows for two months. This prevents creating gaps or damaging the film when removing suction cups or adhesives.

14

4

Share

Can a car tire with cracks on the side still be used?

Minor cracks on the side of a car tire can still be used normally. However, if there are many deep cracks, the tire should be replaced. Generally, the normal lifespan of a tire is three years. For those who frequently drive, it is recommended to replace the tires every two years. Harder and more wear-resistant tires are more prone to cracking. Additional Information: Common types of abnormal tire wear include the following: 1. Early wear in the central part of the tire: The main cause is overinflation. Properly increasing the tire pressure can reduce rolling resistance and save fuel. However, excessive inflation not only affects the tire's shock absorption performance but also causes excessive deformation, reducing the contact area with the ground. As a result, normal wear is concentrated in the central part of the tread, leading to early wear. Choosing wide tires for narrow rims can also cause early wear in the central part. 2. Excessive wear on both sides of the tire: The main causes are underinflation or long-term overloading. When the tire pressure is low or the load is heavy, the contact area between the tire and the ground increases, causing both sides of the tire to engage with the ground and resulting in early wear. 3. Excessive wear on one side of the tire: The main cause is misaligned front-wheel positioning. When the camber angle of the front wheels is too large, the outer edge of the tire experiences early wear. Conversely, if the camber angle is too small or absent, the inner edge of the tire wears prematurely. 4. Sawtooth wear on the tire tread: The main causes are improper front-wheel alignment or issues with the front suspension system, such as loose ball joints. These problems cause the normally rolling wheels to slip or experience constantly changing alignment during driving, leading to sawtooth wear. 5. Excessive wear on individual tires: Issues with the suspension system of a particular wheel, bent support components, or imbalance in individual wheels can cause early wear on specific tires. In such cases, the alignment of the severely worn wheel, the condition of the independent suspension springs and shock absorbers should be checked, and the wheel rotation cycle should be shortened.

5

Share

When will the National VI emission standard be implemented in Hunan Province?

Hunan Province will implement the National VI emission standard from July 1, 2019, in accordance with the national unified deployment. The National VI emission standard, which is an upgraded version of the current National V emission standard, imposes more stringent limits on the following pollutant emissions: 1. CO (Carbon Monoxide); 2. THC (Total Hydrocarbons); 3. NMHC (Non-Methane Hydrocarbons); 4. NOX (Nitrogen Oxides); 5. PM (Particulate Matter); 6. PN (Particle Number).

3

2

Share

What to Do When the Fuel Pump is Noisy?

When the fuel pump produces a loud humming noise, it is mainly due to an issue with the gasoline pump. It is recommended to replace the gasoline pump. Below is some information about the gasoline pump: 1. The function of the gasoline pump is to draw gasoline from the fuel tank and deliver it through the pipeline and gasoline filter to the float chamber of the carburetor. 2. It is precisely because of the gasoline pump that the fuel tank can be placed at the rear of the vehicle, far from the engine, and below the engine. Extended Content: To ensure the long-term durability of the generator, the following precautions should be taken: 1. Before installing the fuel transfer pump in the generator set, check whether the model and specifications are correct, and remove the anti-rust oil. The thickness of the selected gasket should be appropriate. To avoid the piston being stuck or not operating properly, prevent the gasket from being too thin or too thick. When tightening the bolts, apply uniform torque to prevent damage to the fuel pump. 2. There is a rubber sealing device between the hand pump piston and the hand pump body on the fuel transfer pump. Do not disassemble it arbitrarily. If the rubber ring is found to be damaged, replace it promptly. 3. The coarse filter screen inside the fuel transfer pump joint is extremely prone to clogging due to debris such as cotton fluff. Regularly inspect and clean it. If the filter screen is damaged, it must be repaired or replaced immediately. 4. Ensure that all sealing gaskets on the generator set's fuel transfer pump are intact. The plastic sealing rings should not be disassembled too many times and should be replaced periodically.

11

0

Share

What is the tire model of the Cruze?

The Cruze uses Continental ContiMAXContact-MC5 tires with the specification 225/45-R17. Below is an introduction about tire pressure: 1. Introduction: Tire pressure, strictly speaking, refers to the air pressure inside the tire. The level of tire pressure plays a crucial role in the performance and power of the car, affecting driving safety. 2. Hazards of excessive tire pressure: The friction and adhesion of the tire will decrease, affecting braking performance; it can cause steering wheel vibration and deviation, reducing driving comfort. 3. Hazards of insufficient tire pressure: The friction coefficient with the road surface increases, leading to higher fuel consumption.

4

Share

What are the differences between Maybach and Mercedes-Benz S?

The differences between Maybach and Mercedes-Benz S are as follows: 1. Dimensions: The Maybach has a wheelbase of 3365 mm, with length, width, and height measuring 5466 mm, 1899 mm, and 1500 mm respectively. The Mercedes-Benz S has a wheelbase of 3165 mm, with length, width, and height measuring 5259 mm, 1899 mm, and 1497 mm respectively. 2. Powertrain: The Maybach is equipped with three engines: a 3.0-liter turbocharged engine, a 4.0-liter turbocharged engine, and a 6.0-liter turbocharged engine. The Mercedes-Benz S-Class comes with two engines: a low-power version of the 3.0-liter turbocharged engine and a high-power version of the 3.0-liter turbocharged engine.

13

2

Share

How long does it take to review the study hours for Subject 2?

How long after window tinting can you not roll down the windows?

Can a car tire with cracks on the side still be used?

When will the National VI emission standard be implemented in Hunan Province?

What to Do When the Fuel Pump is Noisy?

What is the tire model of the Cruze?

What are the differences between Maybach and Mercedes-Benz S?

How Many Cylinders Does the Mazda 3 Axela Have?

How long does it take to fully charge a car battery while driving?

What is the battery model of the Geely Emgrand?

How Many Types of Car Air Conditioning Are There?