How long is the grace period for expired vehicle inspection in 2020?

What are the reasons why a gasoline engine cannot start when hot?

Gasoline engine may fail to start due to the following reasons: insufficient fuel supply preventing ignition; low battery voltage, which is too low to enable the starter to provide sufficient speed and torque to start the engine; mechanical failures, including faulty spark plugs or ignition coils, which prevent normal engine ignition. Below are the relevant details: 1. Check the engine oil and gasoline: Verify whether the engine oil and gasoline are newly added. If not, and if they have been in use for more than three months, it is necessary to drain and replace them. Engine oil and gasoline have a validity period of only three months. Beyond this period, they lose their viscosity and effectiveness. 2. Check the spark plugs: Inspect whether the spark plugs are firing. If not, remove the spark plugs, dip them in a small amount of gasoline, and reinstall them. Then check if the generator starts firing. If it does, the engine should start.

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Is reverse gear R or N?

Reverse gear is R. More details about the reverse gear are as follows: 1. Wait until the car comes to a complete stop before shifting into R gear, otherwise it may damage the transmission. 2. In an automatic transmission, P stands for Park, N for Neutral, D for Drive, and some cars also have S, L, and M, representing Sport mode, Low gear, and Manual mode respectively. 3. R is the abbreviation of the English word 'Reverse', meaning backward, hence it represents reverse gear. Regardless of the type of transmission, R generally stands for reverse gear.

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What is the pressure of car air conditioning pipes?

Car air conditioning low-pressure pipe pressure is between 1.0 to 2.5 bar; high-pressure pipe pressure is between 15 to 18 bar. More information about car air conditioning is as follows: 1. The normal low pressure of car air conditioning should be between 0.15 to 0.25 MPa; normal high pressure should be between 1.3 to 1.7 MPa. 2. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle compartment. 3. It can provide a comfortable riding environment for passengers, reduce driver fatigue, and improve driving safety. 4. The air conditioning system has become one of the indicators to measure whether a car is fully equipped with functions.

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Under what circumstances does the fuel injector need cleaning?

When a car has been driven approximately 30,000 to 50,000 kilometers, the fuel injector needs cleaning. Here are the methods to determine whether the fuel injector needs cleaning: 1. Check the fuel filter. The replacement cycle for the fuel filter is 20,000-40,000 kilometers. Generally, vehicles have two fuel filters: one is built into the fuel pump inside the fuel tank and does not need replacement; the other is installed outside the fuel tank. You need to remove the external fuel filter and check whether the gasoline inside is dark in color or contains excessive impurities. If so, it needs immediate replacement, as it can also severely clog the fuel injector. 2. When starting the vehicle in first gear, the body shakes noticeably, but the shaking disappears after shifting to higher gears. This is mainly because, at higher speeds, the fuel injection volume increases, and minor impurities on the surface of the fuel injector may be washed away or dissolved, improving the vehicle's performance. 3. If the vehicle's fuel consumption increases significantly over a certain period, accompanied by a decrease in engine power, it is necessary to use a diagnostic tool to read the data stream and determine whether the fuel injection volume is normal. 4. Place a white tissue at the end of the vehicle's exhaust pipe, then start the vehicle and hold the white tissue close to the exhaust gas emitted from the pipe. Wait for a while to see if the white tissue becomes blackened by the exhaust gas. If the tissue turns black, it indicates incomplete combustion of the air-fuel mixture, and the fuel injector needs to be checked.

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What is the recommended transmission fluid change interval for the Volvo S90?

Volvo S90 transmission fluid is recommended to be changed every three years or 60,000 kilometers. After being used for a period of time, the viscosity of transmission fluid decreases, leading to reduced sealing performance. The lubrication effect of the transmission fluid weakens, and without effective lubrication, it can affect the operation of the hydraulic system, causing unstable transmission pressure in the car. The following are the hazards of not changing the transmission fluid for a long time: 1. Failure to change the transmission fluid for an extended period can cause abnormal wear and severe deterioration of the fluid in the transmission. 2. Not changing the transmission fluid for a long time can lead to deterioration and volatilization under high-speed and high-temperature conditions, thereby exacerbating the wear of mechanical components. In severe cases, it can damage internal transmission parts, shortening the lifespan of the vehicle. 3. Prolonged failure to change the transmission fluid can cause the fluid to become granular, blocking oil passages and damaging valve bodies, directly affecting system oil pressure and power transmission. This can result in delayed responses and rough shifting in the transmission.

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How to Remove Odor from a New Car?

Here are methods to remove odor from a new car: 1. Open the windows for ventilation; 2. Turn on the internal air circulation; 3. Place activated charcoal inside the car; 4. Install an air purifier in the car; 5. Turn on the external air circulation of the air conditioning; 6. Place some pomelo or orange peels in the car to mask odors with their fruity fragrance; 7. Apply photocatalytic coating to eliminate odors. Additional information on the causes of odors in new cars: During manufacturing, new cars incorporate various materials such as leather, plastic panels, soundproofing cotton, adhesives, and asphalt. These materials often contain formaldehyde and other odorous substances. In the confined space of a car with poor air circulation, these odors can accumulate, making them noticeable and pungent upon entering the vehicle.

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How long is the grace period for expired vehicle inspection in 2020?

What are the reasons why a gasoline engine cannot start when hot?

Is reverse gear R or N?

What is the pressure of car air conditioning pipes?

Under what circumstances does the fuel injector need cleaning?

What is the recommended transmission fluid change interval for the Volvo S90?

How to Remove Odor from a New Car?

Is the Mercedes-Benz GLB200 a three-cylinder or four-cylinder engine?

Does charging a phone in the car affect the car battery?

Why Would a Car Stall?

Does the Mercedes-Benz GLB have a 5-seater model?