Which industry does auto repair belong to?

What is the issue when the EFI motorcycle's malfunction indicator light stays on?

When the malfunction light is on, it indicates there is a problem with the electronic control system, which is mainly related to the circuitry. Classification of EFI motorcycles: Closed-loop: The function and operation of closed-loop EFI motorcycles are essentially the same as those of cars. Closed-loop EFI motorcycles can adjust the fuel injection volume of the electronic injector based on the oxygen content in the muffler, and they can also change the intake pressure according to variations in external atmospheric pressure. Most domestically produced EFI motorcycles on the market are open-loop. Open-loop: Open-loop EFI motorcycles have been largely phased out due to their inability to meet high environmental standards.

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What does it mean when the oil can light turns red?

The red oil can light indicates a low oil pressure alarm, meaning the engine oil level is critically low. There are several reasons why the car's oil light may illuminate: Excessive oil viscosity: The viscosity of the oil is closely related to its quality. Higher viscosity means better resistance to high temperatures, and vice versa. Clogged or improperly adjusted pressure relief valve: A faulty pressure relief valve can cause abnormal oil pressure, triggering the oil light. Insufficient oil volume: If there's not enough oil, the oil pump's output decreases or fails to pump oil due to air ingress, leading to reduced oil pressure. This results in increased wear on components like the crankshaft and bearings, as well as the cylinder liners and pistons, due to inadequate lubrication.

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What is the issue when both 4H and 4L lights illuminate together?

When both the 4H and 4L lights illuminate together, it indicates a fault in the four-wheel drive system that requires inspection and repair. Introduction to Four-Wheel Drive Systems: It enables all four wheels of the vehicle to receive driving force. The engine's power is distributed to all four wheels, significantly reducing wheel slippage on poor road conditions and greatly improving the vehicle's off-road capability. Classification of Four-Wheel Drive Systems: Part-Time 4WD and Full-Time 4WD. Part-Time 4WD can operate in two modes: one is two-wheel drive, where only two wheels receive power, similar to a conventional vehicle; the other is four-wheel drive, where the front and rear axles distribute power equally in a 50:50 ratio. Full-Time 4WD is a system where all four wheels continuously maintain driving force.

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What Material is Genuine Automotive Leather?

Automotive genuine leather is processed from animal hides, conceptually contrasting with artificial leather made from chemical fiber materials. In the market, genuine leather generally refers to one of three types: top-grain leather, split leather, or bonded leather, with prices decreasing in that order. Identifying Genuine Automotive Leather Seat Covers: Genuine leather has good water absorption, whereas fake leather exhibits the opposite property with better water resistance. You can test this by dipping a finger in water and wiping it on the surface—observe the absorption. Good absorption indicates genuine leather, while poor or no absorption typically suggests fake leather. Genuine Leather Seat Maintenance Tips: Keep automotive leather seats away from heat sources, as proximity may cause cracking. Avoid prolonged exposure to direct sunlight to prevent color fading. Regularly clean and maintain them by dusting with a slightly damp cloth to keep them dry and tidy. For stains, use a small amount of multi-purpose foam cleaner and ensure the surface remains dry. Avoid contact with sharp objects like keychains or metal buttons on clothing to prevent scratches. Also, prevent liquids from soaking into the seats.

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How Much Fuel Does Running Only the Car AC Consume?

Driving the same route with the AC on consumes 20% to 30% more fuel compared to driving without AC. Below is relevant information: Introduction to Vehicle Air Conditioning: The vehicle air conditioning system consists of a compressor, condenser, throttle element, evaporator, fan, and necessary control components. It is used to regulate the temperature and humidity inside the vehicle, providing a comfortable environment for the driver. Working Principle: When the compressor operates, it draws in low-temperature, low-pressure gaseous refrigerant from the evaporator. After compression, the temperature and pressure of the refrigerant increase, and it is sent to the condenser. Inside the condenser, the high-temperature, high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser, causing it to liquefy into a liquid. When the liquid refrigerant flows through the throttle device, its temperature and pressure decrease, and it enters the evaporator. Inside the evaporator, the low-temperature, low-pressure liquid refrigerant absorbs heat from the vehicle's interior air passing through the evaporator, causing it to evaporate into a gas. The gas is then drawn back into the compressor to begin the next cycle.

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Differences Between Medium-Duty Gear Oil and Heavy-Duty Gear Oil

Differences between medium-duty gear oil and heavy-duty gear oil include different uses and different compositions. Different uses: Gear oils are also divided into industrial oils and automotive oils. For example, Scalan heavy-duty gear oil is used in industrial-type reduction gearboxes such as mining equipment, cement plants, ball mills, roller mills, crushers, conveyors, kilns, winches, machine tools, and marine equipment. Medium-duty gear oil cannot meet the requirements of industrial-type reduction gearboxes, so it is mostly used in automotive-type reduction gearboxes. Different compositions: Gear oil is an important lubricating oil mainly composed of petroleum lubricating base oil or synthetic lubricating oil, with the addition of extreme pressure anti-wear agents and oiliness agents. The main difference in composition is that the base oils used by various manufacturers are different. Gear oil is used in various gear transmission devices to prevent tooth surface wear, scratches, sintering, etc., extend their service life, and improve power transmission efficiency. Gear oil should have good anti-wear, load-bearing performance and appropriate viscosity.

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Which industry does auto repair belong to?

What is the issue when the EFI motorcycle's malfunction indicator light stays on?

What does it mean when the oil can light turns red?

What is the issue when both 4H and 4L lights illuminate together?

What Material is Genuine Automotive Leather?

How Much Fuel Does Running Only the Car AC Consume?

Differences Between Medium-Duty Gear Oil and Heavy-Duty Gear Oil

What Causes Shock Absorber Oil Leakage in Cars?

What Causes Wavy Patterns on Car Window Tinting Film?

Is the vehicle code the same as the chassis number?

What does it mean when a car displays 'nokey'?