Is the Front Tire Pressure Higher or the Rear Tire Pressure?

Does a New Car Battery Need Charging?

Yes, a new car battery needs charging. New batteries come from the factory with some charge, but not fully charged. Some batteries develop high internal resistance after prolonged use, reaching full charge quickly but discharging rapidly as well. These batteries may show normal no-load voltage when tested with a multimeter, so it's important to not only measure the no-load voltage but also the discharge current, which can be tested using a discharge tester. Car batteries, also known as storage batteries, are a type of battery that works by converting chemical energy into electrical energy. They are categorized into conventional lead-acid batteries, dry-charged batteries, and maintenance-free batteries. Typically, when people refer to car batteries, they mean lead-acid batteries. The normal service life of a car battery ranges from 1 to 8 years, depending largely on the vehicle's condition.

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What is the composition of the engine lubrication system?

The composition of the engine lubrication system is: 1. Oil supply device: includes oil pump, oil passage, oil pipe, and pressure relief valve; 2. Filtration device: includes oil strainer, coarse filter, fine filter, and bypass valve; 3. Instrument and signal device: includes clogging indicator, pressure sensor, oil pressure alarm, indicator light, and pressure gauge. The lubrication methods of the engine lubrication system are: 1. Pressure lubrication: a lubrication method that supplies oil to the friction surfaces at a certain pressure; 2. Splash lubrication: a lubrication method that uses oil droplets or mist splashed by moving parts during engine operation to lubricate the friction surfaces; 3. Grease lubrication: a method of lubricating the working surfaces of parts by periodically injecting grease through grease fittings.

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What is the working principle of the reverse gear in a transmission?

The working principle of the reverse gear in a transmission varies depending on the type: 1. For manual transmissions, the reverse gear works by shifting the gear lever to switch the driving gear on the intermediate shaft, engaging different gear combinations with the power output shaft to alter the torque and speed of the driving wheels. 2. For automatic transmissions, the reverse gear operates using a planetary gear mechanism to change speed automatically based on the degree of throttle pedal pressure and vehicle speed changes, requiring the driver to only control the speed via the accelerator pedal. The functions of a transmission include: 1. Changing the transmission ratio to expand the range of torque and speed variations for the driving wheels. 2. Enabling reverse driving without altering the rotation direction of the engine crankshaft. 3. Interrupting power transmission to the driving wheels during engine start, idle operation, gear shifting, or when stopping to output power. 4. Allowing neutral gear, where the transmission does not output power when the clutch is engaged.

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Which country produces Ferodo brake pads?

Ferodo brake pads are produced in the United Kingdom. Brake pads refer to the friction materials fixed on the brake drums or brake discs that rotate with the wheels. The friction linings and friction blocks within them bear external pressure and generate friction to achieve the purpose of vehicle deceleration. Situations where brake pads need replacement include: 1. When the thickness reaches about 0.3cm; 2. When the brake warning light illuminates; 3. When a hissing sound occurs during braking; 4. When the braking effect is significantly weakened. Maintenance methods for brake pads include: 1. Regularly check the thickness of the brake pads; 2. Regularly inspect the wear level of the pads and replace them when they reach the limit; 3. Use specialized tools to push back the brake caliper when replacing the pads; 4. After replacement, press the brake pedal several times to eliminate the gap between the pads and the brake disc; 5. Replace with brake pads provided by the original equipment manufacturer.

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How Long Does It Take to Drive Away After Full Payment for a Car?

Generally, you can drive away the car within 1-3 days after full payment. If the car is in stock, you may complete the temporary license procedures and pick up the car on the same day. Below is relevant information about purchasing a car with full payment: Conditions for picking up the car: Paying in full for a car is not as simple as just handing over the money and driving away. It involves processing insurance, obtaining a temporary license, and confirming the car's condition before the vehicle is legally allowed on the road. Reasons why you can't pick up the car on the same day: After receiving the payment, the 4S dealership issues an invoice and then proceeds to arrange insurance and temporary licenses for the customer. Additionally, the car needs to be cleaned and prepared for the delivery ceremony, all of which require some time.

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What Do You Need to Bring for the First Car Maintenance?

Items required for the first maintenance include: driver's license; maintenance manual; warranty manual; owner's ID card; vehicle registration certificate; vehicle purchase invoice, to be taken to the designated first maintenance facility for the vehicle's initial service. Important note: make an appointment with the 4S shop in advance. The first maintenance refers to the initial service after a new car has been driven, with the specific timing varying by vehicle, typically after driving 1,000 to 3,000 kilometers. It is essential to attend the first maintenance on time, neither early nor delayed. The completion of the first maintenance signifies the end of the car's break-in period, allowing the vehicle to be driven under standard load and normal speed as required. The timing for the first maintenance is calculated from the date of vehicle pickup. There are two indicator values for the first maintenance: mileage and time. Whichever comes first serves as the standard. First maintenance tasks include: changing the engine oil and oil filter, cleaning the air filter, checking various fluid levels for normalcy, inspecting the generator belt and wiper blades for damage, checking tire pressure for normalcy, and examining tires for damage or bulges. Required time: completing all tasks takes approximately 2 hours. The most critical aspect of a new car's first maintenance is changing the engine oil and oil filter. When replacing the engine oil, the oil filter must also be replaced simultaneously. The selection of engine oil must refer to the "Vehicle Usage and Maintenance Manual," as different vehicle models specify different oil grades. Maintenance precautions: Do not rinse the interior of the car body with water: Many people clean and organize their cars during holidays, washing the body with water and wiping it with a cloth. Here, it is important to note that the interior of the car body should not be directly washed with water. If the floor mats are dirty, use a vacuum cleaner or take them out to brush and wash with detergent, dry them, and then put them back. There are many drainage holes under the rubber mats on the floor of the driver's compartment. If water enters, it will not dry naturally but will flow through the holes to areas like the gearbox, causing erosion and corrosion. The best practice is to clean with a vacuum cleaner and then wipe with a cloth to prevent water accumulation. Do not mix different brands of antifreeze: When the antifreeze in the car is low, it is recommended to drain the antifreeze and add the same brand from the start. Since antifreeze brands differ, their chemical properties vary significantly. Various functional additives may corrode others. Different brands of antifreeze use different additives, so they should not be mixed to avoid unnecessary trouble. Do not lubricate tire bolts and nuts: When bolts on a moving car rust, they are often oiled to function properly again. To prevent bolts and nuts on wheels from rusting, some people apply lubricant to them, which can pose safety risks. When the car is driven at high speeds, the bolts and nuts may loosen or even fall off, leading to driving malfunctions. Do not press the accelerator when starting an EFI (Electronic Fuel Injection) car: The starter of an EFI car differs from that of a conventional car, as its fuel injection control device can automatically adjust the fuel supply based on the starter's temperature and operating conditions, ensuring a smooth start.

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Is the Front Tire Pressure Higher or the Rear Tire Pressure?

Does a New Car Battery Need Charging?

What is the composition of the engine lubrication system?

What is the working principle of the reverse gear in a transmission?

Which country produces Ferodo brake pads?

How Long Does It Take to Drive Away After Full Payment for a Car?

What Do You Need to Bring for the First Car Maintenance?

What Are the Pros and Cons of Full-Coverage Floor Mats?

What is the car Bluetooth password?

Will the Exam Fee Be Refunded If the Subject 2 Test Is Cancelled?

How to Check if a Car Meets China 5 or China 6 Emission Standards?