Why is the noise particularly loud when driving at high speeds?

What are the causes of clutch shudder?

Here are the reasons for clutch shudder: 1. Clutch shudder: Let the engine idle, engage a low gear, slowly release the clutch pedal and increase the throttle to start. If the vehicle body shakes at this time, it indicates clutch shudder. 2. Uneven distribution of positive pressure between the driving and driven discs: The uneven elasticity of the pressure springs in a frequently engaged clutch, inconsistent adjustment of the release levers, and/or uneven ends of the diaphragm spring fingers can lead to asynchronous pressure application, uneven force on the pressure plate, or even tilting of the pressure plate, resulting in poor contact between the driving and driven discs and causing clutch shudder. According to auto parts experts, the solution is to replace the clutch pressure springs and level the release levers. 3. Weakened damping spring elasticity: Weakened elasticity of the clutch torsional damping springs, weakened clutch pressure springs, or cracks in the diaphragm spring can all cause shudder when the clutch is engaged. The recommended solution is to replace the springs. 4. Poor contact of the clutch lining: Poor contact of the clutch lining, surface hardening, or adhesion of sticky substances can easily cause clutch shudder. In this case, the clutch lining should be re-bonded.

7

5

Share

What are the symptoms of excessively thin engine oil?

Engine oil is composed of a base oil blend made from petroleum-based hydrocarbons, polyalphaolefins (PAO), or mixtures of these in varying proportions. Excessively thin engine oil can lead to the following two conditions: 1. Insufficient oil pressure, resulting in semi-dry or dry friction between various friction components, and in severe cases, can cause bearing seizure. 2. It can cause excessive engine noise. The reasons for engine oil becoming too thin include: 1. Malfunctions in the fuel supply system or poor fuel atomization, allowing fuel or large amounts of overly rich fuel mixture to enter the crankcase and mix with the oil, thus thinning the oil. 2. Prolonged engine idling or repeated starting, causing fuel mixture to enter the crankcase and thin the oil. 3. Oil leakage from the forced-lubrication fuel injection pump or fuel transfer pump, leading to oil thinning. 4. Cylinder wall wear causing changes in cylinder diameter, piston ring damage, or improper piston ring installation, resulting in oil thinning.

13

3

Share

What is the tax rate for buying a car?

Buying a car involves a tax rate of 10%. The details are as follows: The vehicle purchase tax refers to the tax levied when purchasing a car, and the tax amount is 10% of the car's selling price (excluding tax). The taxpayers of the vehicle purchase tax are units and individuals who acquire taxable vehicles (including purchase, import, self-production, gift, award, or other means of acquisition for personal use), with a tax rate of 10%. In addition to cars, motorcycles, electric vehicles, trailers, and agricultural transport vehicles are also subject to the vehicle purchase tax. Relevant information is introduced as follows: The tax rate for China's automobile consumption tax has been basically formulated, but the reason for not being implemented lies in the choice between two collection schemes—whether to divide it into 5 brackets or 7 brackets. Under the 7-bracket scheme, the lowest tax rate would be only 1%; while under the 5-bracket scheme, the lowest tax rate would be 3%, which is the biggest difference between the two schemes. In the 7-bracket scheme, the classification of displacement is refined, with cars alone being divided into 7 intervals based on 1L, 1.5L, 2.0L, 2.5L, 3.0L, 4.0L, etc. The lowest tax rate could be as low as 1%, while the highest rate remains at 20%. Additionally, the tax rates for other brackets will fluctuate between 3%~25%, while the tax rates for other types of passenger vehicles will range between 1%~9%.

3

5

Share

What is Turbo Lag?

Turbo lag refers to the time required for the turbocharger's pressure to rise to its maximum value after the throttle is fully opened. It is a common phenomenon in turbocharged engines. The following is an introduction to turbo lag: 1. Turbocharging technology is a method to enhance an engine's air intake capacity. When you see 'turbo' or 't' on a car's rear, it indicates that the vehicle is equipped with a turbocharged engine. 2. The main function of a turbocharger is to increase the engine's air intake, thereby boosting the engine's power and torque, making the vehicle more powerful. 3. Turbocharging can be categorized into mechanical supercharging, pressure wave supercharging, exhaust gas turbocharging, and compound supercharging.

4

1

Share

Can You Start the Engine If the Exhaust Pipe Gets Waterlogged?

If the exhaust pipe gets waterlogged, you should not attempt to start the engine. It is crucial to drain the water as soon as possible to prevent impurities from clogging the catalytic converter or damaging the oxygen sensor, which could lead to severe engine damage. If the exhaust pipe is waterlogged and the engine stalls, do not force-start it. Instead, call for roadside assistance immediately and wait for help. There are two ways to address a waterlogged exhaust pipe: 1. If the waterlogging is minor, you can inspect the electronic systems yourself and remove any accumulated water beneath the vehicle's chassis. Then, remove the spark plugs to drain some water from the engine before reinstalling them. This will allow the engine to start without stalling. 2. If the vehicle has been severely waterlogged, professional towing services are required to transport the car to an auto repair shop. After a simple cleaning and drying process for the exhaust pipe, the engine can resume normal operation.

15

3

Share

What to Do When the Driver's License Exam is About to Expire?

If your driver's license exam validity period is about to expire, you can schedule the exam in advance, and there will be a green channel to assist. When the study permit has less than six months of validity remaining, students can switch to priority scheduling in the exam reservation system to participate in a fast-track exam. Here are some details about the driver's license exam: 1. The motor vehicle driving exam is a test to obtain a motor vehicle driver's license, which follows nationally unified exam content and passing standards. 2. The driver's license exam consists of three subjects and four tests: theoretical knowledge, field driving skills, road driving skills, and knowledge related to civilized driving. Different exam items are specified based on the type of vehicle being licensed. 3. The exam sequence follows Subject 1, Subject 2, Subject 3, and Subject 4 in order. Only after passing the previous subject can you proceed to the next one.

4

0

Share

Why is the noise particularly loud when driving at high speeds?

What are the causes of clutch shudder?

What are the symptoms of excessively thin engine oil?

What is the tax rate for buying a car?

What is Turbo Lag?

Can You Start the Engine If the Exhaust Pipe Gets Waterlogged?

What to Do When the Driver's License Exam is About to Expire?

How many cylinders does the Geely Emgrand GS engine have?

How often does a C1D driver's license need to be reviewed?

Why Do People Often Fail the Driving Test Part 3?

When is it best to use the S gear in an automatic transmission?