What Causes a Sudden Drop in Idle Speed?

What are the reasons for not being able to practice S-curves well?

S-curves are difficult to practice well due to reasons such as not mastering the techniques or insufficient practice. Below are the S-curve techniques for Subject 2: S-curve sharing technique one: When you hear the prompt "Pass the S-curve," shift into first gear, slowly release the clutch to reach a semi-engaged state, and maintain a slow, steady speed as you drive into the curve. S-curve sharing technique two: When the left corner of the car aligns with the right-side streetlight arc, turn the steering wheel one and a half turns to the left and proceed. When the left edge line of the car aligns with the white circle on the ground, turn the steering wheel one and a half turns back to the center and proceed. Finally, when the car aligns with the white horizontal line on the ground, turn the steering wheel one and a half turns to the left, drive left out of the curve, and complete the test. S-curve sharing technique three: Use the left and right rearview mirrors to align with the left and right lines, keeping the vehicle centered at all times. Observe the diagonal lines: when turning right, align the left corner of the car with the right line; when turning left, align the right corner of the car with the left line. Follow the line with the car’s corner.

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When Will China III Vehicles Be Phased Out?

China III vehicles will not be forcibly scrapped, but they have entered the stage of guided scrapping. One of the measures is the increasing number of restricted zones. Cities such as Beijing, Zhengzhou, Shenzhen, Fuzhou, and Jinan have successively announced restricted zones for China III vehicles. Vehicles violating these restrictions will be subject to fines and penalty points. In effect, these restriction policies equate to indirect scrapping. Below are the relevant details: 1. China III vehicles are only subject to rectification: According to current policies in China, vehicle scrapping is still carried out according to regulations. China III vehicles that fail to meet emission standards will undergo rectification and penalties. They can be modified using relevant technologies, but those that still fail to meet emission standards after modification will be forcibly scrapped. 2. Scrapping period: China has clear regulations that do not set a scrapping deadline for private passenger vehicles, only a "guided scrapping" rule after reaching 600,000 kilometers. Additionally, light and heavy trucks have a mandatory scrapping period of 10 years, which can be extended up to 5 years at most, meaning the maximum mandatory scrapping period for China III trucks is 15 years. 3. Guided scrapping: The China III standard was implemented starting in 2008, so the oldest China III vehicles have not yet reached the 15-year mark. That said, due to the large number of China III private vehicles, they will not be directly and forcibly scrapped. However, most coastal provinces or developed regions have already begun implementing restricted zones.

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What Causes Motorcycle Carburetor Fuel Leakage and How to Repair It?

Motorcycle carburetor fuel leakage can be caused by: 1. The main fuel needle being stuck, leading to a continuous rise in the fuel level and leakage; 2. Wear and tear of the needle valve, causing it not to close tightly and resulting in leakage; 3. A damaged float or one that has absorbed gasoline, losing buoyancy and causing leakage. Solutions for motorcycle carburetor fuel leakage include: 1. Cleaning the float chamber, main fuel needle, and its valve; 2. Replacing the needle valve, while the owner should also pay attention to regularly cleaning the fuel filter and using high-quality gasoline; 3. Replacing the float. Motorcycle carburetor maintenance precautions: 1. If the motorcycle is not used for an extended period, drain the fuel from the carburetor float chamber to prevent gasoline gum deposits from coagulating and causing carburetor failure; 2. The fuel level height in the carburetor float chamber is finely adjusted to meet standards before leaving the factory—do not adjust it arbitrarily to avoid issues such as fuel leakage, black smoke, or poor fuel supply; 3. Clean the carburetor in a clean environment; 4. When cleaning the carburetor, do not use metal wires to poke or clean various orifices or small channels.

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Should You Downshift When Decelerating?

It is not a problem if you do not downshift when decelerating, but if the speed is too low and the clutch is not depressed, the vehicle may stall. Additionally, not downshifting after deceleration and then attempting to accelerate can cause lugging, which damages the transmission and negatively impacts both the engine and transmission due to the significant impact force, leading to potential harm. Therefore, it is advisable to shift gears appropriately based on the vehicle speed. Precautions for deceleration are as follows: Single-wheel passing over speed bumps: Many car owners choose to pass over speed bumps with one wheel, believing it reduces damage to one side. While this logic is correct, it overlooks the fact that all the impact force is borne by one side. Over time, this can lead to misalignment or deformation of the suspension, issues with wheel alignment, and tire wear. It is recommended to perform wheel alignment promptly. Diagonal passing: Diagonal passing is relatively straightforward—tilting the front of the car and passing over the bump sequentially. This method may feel less bumpy, but it causes uneven force distribution on the suspension system. Passing over speed bumps this way actually causes more damage to the springs and shock absorbers, and the car body also bears the force generated by the bump, making it not an ideal method. Dual-wheel passing: Dual-wheel passing is undoubtedly the best way to go over speed bumps. Although it may feel more jarring, both wheels contract and bear the force simultaneously, with the springs and shock absorbers sharing the load. Whether the suspension is independent or non-independent, it will not be significantly affected.

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What is the fuel tank capacity of the Changan CS35plus?

The 2021 Changan CS35plus models all have a fuel tank capacity of 53 liters. The vehicle is equipped with two engine options: a 1.6L naturally aspirated engine and a 1.4T turbocharged engine. The 1.6L engine is paired with an 8-speed continuously variable transmission (CVT), while the 1.4T engine is paired with a 7-speed wet dual-clutch transmission (DCT). In the same vehicle class, the 2022 KAMIQ has a fuel tank capacity of 52.8 liters, the 2021 Jetour X70 has a 55-liter tank, and the 2022 Changan Oshan X5 also has a 53-liter fuel tank. During actual refueling, the amount of fuel may exceed the nominal capacity. This is because the fuel tank capacity specified by the manufacturer is measured from the bottom of the tank to the safety level. There is additional space from the safety level to the tank opening, which is designed to allow for fuel expansion when temperatures rise, preventing overflow. If fuel is filled up to the tank opening during refueling, the actual amount of fuel may exceed the nominal tank capacity. To check the remaining fuel level, drivers can observe the fuel gauge on the right side of the instrument panel, which is marked with E (empty) and F (full). When the needle is close to E, it indicates low fuel, while nearing F means the tank is nearly full.

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How to Judge the Distance Around the Car While Driving?

Judging the distance around the car while driving: Determine based on the position of the left wheel; use the side mirrors; check the distance between the vehicle and the roadside through the rearview mirror; the front and rear distances can also be judged with the bumper as the central point. The specific methods for judging the distance around the car while driving are as follows: 1. Determine based on the position of the left wheel: When the line of sight aligns the protruding node of the wiper with an object on the ground, the left wheel will run over that object while moving. 2. Use the side mirrors: Observe the distance between the vehicle and the lane dividers to adjust the vehicle's position. You can also use markers on the dashboard or hood to check the left and right distances. When observing the left lane divider, you can generally drive along the left lane divider with the edge of the left headlight, keeping the vehicle centered in the lane. Alternatively, you can use the right side of the dashboard, slightly to the right of the center point, to align with the lane divider and keep the vehicle centered. 3. Check the distance between the vehicle and the roadside through the rearview mirror: This helps avoid running over the curb or getting too close and scratching the wheel hub. Inside the car, you can also observe the distance between the vehicle and the curb by using a target point about 10 cm to the right of the dashboard's center point. When this point overlaps with the curb, the distance between the wheel and the curb is approximately 20 cm. 4. Use the bumper as the central observation point: When you can no longer see the rear bumper of the car in front, do not get any closer, as the distance is only 0.3 meters. It is advisable not to get too close, even if you are not worried about hitting the car in front when starting, as the car in front might roll back, causing greater danger.

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What Causes a Sudden Drop in Idle Speed?

What are the reasons for not being able to practice S-curves well?

When Will China III Vehicles Be Phased Out?

What Causes Motorcycle Carburetor Fuel Leakage and How to Repair It?

Should You Downshift When Decelerating?

What is the fuel tank capacity of the Changan CS35plus?

How to Judge the Distance Around the Car While Driving?

How to Handle Speeding on Highways?

What are the consequences of leaving the car door unlocked overnight?

Can elderly people over 70 years old still drive?

Where is the car charging port located?