Is a Car Sunroof Useful?

Why Does a Minivan Shake While Driving?

Here are the reasons why a minivan may shake while driving: 1. Severe engine carbon buildup: The most common cause of vehicle shaking is a dirty throttle body or excessive carbon deposits in the fuel injectors. When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold start injector is largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. Solution: Clean the fuel system and check if the idle control valve has carbon buildup that needs cleaning. 2. Ignition system issues: Inspect the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or weak spark plug firing can also cause such symptoms. Solution: Check if the spark plugs have excessive carbon buildup and replace them if necessary. 3. Unstable fuel pressure: Have the fuel supply pressure and intake pressure sensors checked at a 4S shop. Abnormal fuel pump pressure or faulty intake pressure sensor readings can cause the vehicle to shake. Solution: Check the fuel pressure and replace components if needed. 4. Aging engine components: Vehicle shaking can also be related to worn engine mounts. Engine mounts act as the engine's shock absorption system, absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations can transfer to the steering wheel and cabin, causing shaking at idle.

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How often should a family car be inspected after 6 years?

Family cars should be inspected every 2 years after 6 years. The specific details are as follows: After the implementation of the new vehicle inspection regulations, cars between 6 and 10 years old must be inspected every 2 years. At the 6th and 8th year, the vehicle must undergo an on-site inspection. For private cars over 10 years old, the original inspection cycle still applies, i.e., once a year for cars between 10 and 15 years old, and once every 6 months for cars over 15 years old. During the vehicle inspection, the owner can apply for an inspection compliance mark at the local vehicle management office within 3 months before the expiration of the current inspection period. The vehicle inspection schedule is divided into the following categories (motor vehicles should be inspected from the date of registration): 1. Commercial passenger vehicles: Commercial passenger vehicles must be inspected once a year for the first 5 years; after 5 years, once every 6 months; 2. Trucks and large/medium non-commercial passenger vehicles: Trucks and large/medium non-commercial passenger vehicles must be inspected once a year for the first 10 years; after 10 years, once every 6 months; 3. Small and mini non-commercial passenger vehicles: Small and mini non-commercial passenger vehicles can be exempt from inspection twice within the first 6 years (but must apply for an inspection mark every 2 years); after 6 years, once a year; after 15 years, once every 6 months.

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How to Make a U-turn at an Intersection Ahead While Driving a Motor Vehicle?

When making a U-turn at an intersection ahead while driving a motor vehicle, the methods vary depending on different situations, as follows: 1. U-turn in the left-turn lane requires crossing the pedestrian crossing: When the traffic light turns green at the intersection, you can make a U-turn in the left-turn lane, but you must cross the pedestrian crossing. 2. U-turn can be made directly if the inner side of the lane is a dashed line: If the inner side of the double yellow line left-turn lane is a dashed line, you can make a U-turn directly without regard to the traffic light, but you must not affect the oncoming traffic. 3. U-turn can be made at the dashed line if there is a yellow grid dashed line: If there is a yellow grid dashed line in the middle of the road, you can make a U-turn at the dashed line, but you must not stop inside the yellow grid. 4. U-turn can be made when the light turns green in the waiting area: At an intersection with a left-turn waiting area, enter the left-turn waiting area when the traffic light turns green. When the left-turn light turns green, you can make a U-turn.

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Is it necessary to buy a safety seat for babies?

It is necessary to buy a safety seat for babies because the seat belts in the car are specifically designed for adults and are only suitable for people over 145 cm tall. Below are the four stages of correct use of the child restraint system: 1. First stage (rear-facing child safety seat): Infants and children aged 1 year and under (weighing 0-13 kg) should use a rear-facing child car safety seat. This seat has multiple layers of protection, including a backrest, cushion, and neck safety pillow, which maximizes the absorption of impact force. 2. Second stage (forward-facing child safety seat): Children aged 1-4 years (weighing 9-18 kg) should switch to a forward-facing child seat, and the harness inside the seat needs to properly restrain the child. 3. Third stage (high-back or backless booster seat): Children aged 4-12 years (weighing 15-36 kg, under 145 cm tall) should use a booster seat, ensuring that the shoulder belt of the seat belt rests on the child's shoulder and the lap belt is on the child's hips. 4. Fourth stage (adult seat belt): Children aged 12 and above (weighing over 36 kg, 145 cm and taller) should use the adult seat belt, ensuring that the belt's position is on the child's shoulder and hips. The child should sit with their back against the seat, feet flat on the floor, and maintain this posture throughout the journey.

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Which road surface is most prone to skidding?

Road surfaces that have just started to get wet from rain are most prone to skidding. Below is extended information about road surface classifications: 1. Rigid pavement: Under traffic loads, it can produce slab action with high flexural strength and very small deflection deformation, exhibiting significant rigidity. Its failure depends on the ultimate flexural strength. The main representative of rigid pavement is cement concrete pavement, including cement concrete pavements with dowel bars at joints, without dowel bars, and with reinforced steel mesh. 2. Flexible pavement: It undergoes relatively large deflection deformation under load with low flexural strength, and accumulates deformation under repeated loads. Its failure depends on the ultimate vertical deformation and flexural strain. The main representatives of flexible pavement are various asphalt surfaces, including asphalt concrete (referred to as concrete after compaction in British standards) surfaces, asphalt macadam surfaces, and asphalt penetration crushed (gravel) stone surfaces. 3. Semi-rigid pavement: Some pavement materials exhibit flexible pavement characteristics in the early construction stage and nearly rigid pavement characteristics in the later stage. Such pavements are called semi-rigid pavements. Examples include pavements constructed with lime-stabilized soil, cement-stabilized soil, lime-fly ash, and lime-slag materials.

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What is the difference between 98 and 95?

Compared with 95 gasoline, 98 gasoline has greater technical difficulty, higher processing costs, and a higher selling price. The following is extended information about gasoline characteristics: 1. Volatility: Refers to the ease with which gasoline evaporates in the carburetor. The volatility of gasoline is comprehensively evaluated by three indicators: distillation range, vapor pressure, and gas-liquid ratio: (1) Distillation range. Refers to the temperature range of gasoline fractions from the initial boiling point to the final boiling point; (2) Vapor pressure. It is an indicator that reflects the tendency of gasoline to cause vapor lock in the fuel system and the difficulty of starting the engine; (3) Gas-liquid ratio. Refers to the ratio of vapor volume to liquid volume in a standard instrument under specified temperature and atmospheric pressure. 2. Anti-knock performance: Refers to the ability of gasoline to resist knocking combustion under various operating conditions. The anti-knock performance of automotive gasoline is expressed by the octane number. The higher the octane number, the better the anti-knock performance. The octane number of gasoline is measured by an octane engine, and the grade of gasoline is classified according to the octane number. 3. Stability: Refers to the stability of gasoline when stored for a long time under natural conditions. It is characterized by gum content, induction period, and iodine value.

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Is a Car Sunroof Useful?

Why Does a Minivan Shake While Driving?

How often should a family car be inspected after 6 years?

How to Make a U-turn at an Intersection Ahead While Driving a Motor Vehicle?

Is it necessary to buy a safety seat for babies?

Which road surface is most prone to skidding?

What is the difference between 98 and 95?

How Long Does the Driver's License Oath Take?

What Category Does a Generator Belong To?

What is the Friction Coefficient of Brakes?

How often should the spark plugs of Volkswagen Touran be replaced?