What Causes Abnormal Noise During Engine Acceleration?

Why does a damaged catalytic converter emit blue smoke?

A damaged catalytic converter emits blue smoke due to issues with the valve oil seal. Below are the scenarios regarding whether a catalytic converter can be repaired: 1. Damage: If the catalytic converter is damaged, such as being broken or deformed, it cannot be repaired and must be replaced. 2. Clogging: If it is only clogged, its functionality can be restored through cleaning, but severe clogging still requires replacement. Here is additional relevant information: 1. Device: The catalytic converter is the most crucial external purification device installed in a car's exhaust system. 2. Exhaust gases: It converts harmful gases such as CO (carbon monoxide), HC (hydrocarbons), and NOx (nitrogen oxides) emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. 3. Origin: This type of converter can transform three common harmful substances in waste into harmless substances, hence the name 'three-way' (tri-functional) catalytic converter.

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How to Use Lights When Making a Left Turn at an Intersection at Night?

When making a left turn at an intersection at night, you need to turn on the low beam headlights and the left turn signal. When a motor vehicle passes through an intersection controlled by traffic lights and makes a left turn, the turn signal should be activated, and the low beam headlights should be turned on at night. Uses of car lights: Low beam headlights: Used when driving in urban areas at night. High beam headlights: Suitable for use in rural areas or on roads without street lighting, but remember to switch back to low beams when meeting another vehicle to avoid dazzling the other driver. Turn signals: The most basic use of turn signals is to indicate to other vehicles and pedestrians when the vehicle is turning, to alert others. Sometimes, turn signals can also serve as illumination in narrow areas, helping the driver observe obstacles on either side. When both turn signals are activated simultaneously, they serve as a warning and indication. Fog lights: Fog lights are used in foggy weather as light signals. They have stronger penetration in fog, making it easier for vehicles or pedestrians to notice them earlier. Reverse lights: When reversing, white reverse lights at the rear of the vehicle will illuminate. On one hand, they can light up the road surface and obstacles at the rear, reducing blind spots when reversing. On the other hand, they also serve as a reminder to pedestrians at the rear.

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What materials are needed for a driving school physical examination?

You need to bring the following items: your ID card and a photocopy of it; a pen; a recent one-inch color photo with a white background, and glue stick or double-sided tape; if you are nearsighted, bring your glasses because the vision test requires a naked-eye vision of 4.9 or above. The physical examination items are as follows: 1. Surgery: (1) General examination of height and weight; (2) Examination of limb, trunk, and neck movement functions; (3) Examination and determination of physical defects; (4) Examination of unequal leg length. 2. Internal Medicine: (1) Cardiovascular diseases are mainly assessed through medical history and auxiliary examinations like blood pressure and heart auscultation; (2) Neurological diseases: medical history and nerve reflex examination; (3) Mental disorders: medical history. 3. Ophthalmology: Naked-eye vision and corrected vision examination. Color discrimination.

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Is it okay to leave a new car parked for 2 months?

Leaving a car parked for two months is generally fine. However, there are several issues to pay attention to when parking the car: 1. Security measures: It's best to choose a garage with strict security measures for parking. 2. Protect the paint: After parking, cover the car with a car cover to prevent dust, mildew, and protect the paint. This way, you won't need excessive cleaning when you drive it next time. If parked in an underground garage, also pay attention to moisture and corrosion prevention. 3. Disconnect the battery: The negative terminal of the vehicle's battery should be disconnected to avoid battery drain and extend the battery's lifespan.

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What does abnormal engine oil level mean?

Abnormal engine oil level indicates that the engine oil level is not normal. It is recommended to check the oil level through the system or the oil dipstick, and consider adding or draining engine oil. Below is the relevant content introduction: 1. Yellow oil warning light: The appearance of a yellow oil warning light indicates that the computer has detected a low oil level, which could be due to insufficient oil or a faulty oil level sensor. 2. Red warning light: If it is a red warning light, it means there is insufficient oil pressure. First, check if the oil pressure sensor is damaged. If not, inspect whether the oil pump inlet is blocked, which may require removing the oil pan for inspection. 3. Function of engine oil: Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption for the engine.

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What Causes the Abnormal Noise When Accelerating?

It may be caused by an improperly installed air filter or an issue with the oil-gas separator. It is recommended that the owner take the vehicle to a repair shop for inspection. The relevant details are as follows: 1. Unfiltered Air: During operation, the engine needs to draw in a large amount of air. If the air is not filtered, the dust suspended in the air can be drawn into the cylinders, accelerating the wear of the piston group and cylinders. Larger particles entering between the piston and cylinder can cause severe "cylinder scoring," which is particularly common in dry and sandy working environments. The air filter is installed in front of the carburetor or intake pipe to filter out dust and sand particles, ensuring that sufficient and clean air enters the cylinders. 2. Oil-Gas Separator: Pull out the oil dipstick slightly to check. If the noise disappears, it may be an issue with the oil-gas separator. If the noise persists, it is likely related to the clutch, and further inspection is recommended. The sound of compressed air flow produced by the turbocharger during operation is normal. The higher the engine speed or the deeper the accelerator pedal is pressed, the louder the engine noise becomes. When pressing the accelerator, do so gently and avoid pressing it all the way down suddenly, as this can cause such noises.

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What Causes Abnormal Noise During Engine Acceleration?

Why does a damaged catalytic converter emit blue smoke?

How to Use Lights When Making a Left Turn at an Intersection at Night?

What materials are needed for a driving school physical examination?

Is it okay to leave a new car parked for 2 months?

What does abnormal engine oil level mean?

What Causes the Abnormal Noise When Accelerating?

What is needed to duplicate a car key?

Where to Renew a Driver's License in Shanghai?

Is the Written Test (Subject 1) Limited to Only Five Attempts?

What are the motor vehicle inspection regulations?