How to adjust the headlights of Volkswagen Polo?

What is the Difference Between Original and Genuine Auto Parts?

Auto parts can be categorized as original or genuine, with the following differences: 1. Definition: Original parts: These are produced by the official suppliers of the vehicle manufacturer. Genuine parts: These are manufactured directly by the original manufacturer, not outsourced or assembled by other authorized manufacturers. 2. Production differences: Original parts: These are not made by the vehicle manufacturer itself but by the same production suppliers as the original parts, also sold in the market, including branded parts and imitations. Genuine parts: Some manufacturers with inadequate production technology are continuously commissioned by well-known brands to produce parts, either as OEM or joint ventures, making it difficult to distinguish genuine from fake in the market.

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How to Properly Jump Start a Car?

Correct method for jump starting a car: 1. Connect the red clamp to the positive terminal of the dead battery, then connect the other end of the red cable to the positive terminal of the booster car; 2. Connect the black clamp to the negative terminal of the booster car, then connect the other end of the black cable to the negative terminal of the dead battery or a suitable grounding point. Precautions for jump starting: 1. Keep the booster car running, and start the dead car normally after completing the jump start procedure; 2. When possible, it's recommended to let the revived car run for more than half an hour to ensure sufficient charging; 3. Avoid contact between positive and negative terminals and ensure correct polarity connection during jump starting.

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What maintenance items should be done for a family sedan at 60,000 kilometers?

The thermostat of the Magotan is located inside the plastic pipe at the interface of the upper and lower water pipes, and it is integrated. Working principle of the thermostat: The thermostat automatically adjusts the amount of water entering the radiator based on the temperature of the coolant, changing the circulation range of the water to regulate the heat dissipation capacity of the cooler and ensure the engine operates within the appropriate temperature range. The thermostat must be kept in good technical condition; otherwise, it will seriously affect the normal operation of the engine. Too late and too early: If the main valve of the thermostat opens too late, it will cause the engine to overheat; if the main valve opens too early, it will prolong the engine warm-up time, causing the engine temperature to be too low.

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What Causes Noise in the Steering Gear?

Reasons for noise in the steering gear: Lack of Lubrication: If there is a lack of lubrication in the screws inside the steering wheel, you need to remove the steering wheel cover and add lubricating oil. This should allow smooth movement in the track and pivot areas. Steering Gear Malfunction: The steering gear might also malfunction. Normally, if the steering wheel is turned too sharply while turning, it puts a greater load on the steering gear, leading to severe wear and resulting in abnormal noises. It is recommended to inspect and replace the faulty components. Insufficient Tire Pressure: Uneven tire pressure in the left front or right front tire can cause the car to pull to one side, leading to unbalanced wheel bearings, misaligned steering gear, and resulting in abnormal noises and pulling.

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What to Do When the Tachometer Needle Fluctuates During Cold Start?

Solutions for fluctuating tachometer needle during cold start are as follows: 1. Check the throttle valve: Inspect if the throttle valve is excessively dirty, clean and recalibrate it. 2. Inspect the intake system: Check for excessive carbon buildup in the engine intake system and fuel injectors. Perform a no-disassembly cleaning and replace the fuel filter. Note: For gasoline engines, when the ambient temperature is not lower than -5°C, and for diesel engines, when the ambient temperature is not lower than 5°C, up to three start attempts (including three) are allowed, with each attempt not exceeding 5 seconds, and the engine must start successfully. Under normal operating temperature, the engine should start successfully within 5 seconds in one attempt. After a cold start, the engine warm-up process should comply with the original design specifications regarding RPM.

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What is the gear ratio of a transmission?

Gear ratio refers to altering the gear ratio of the vehicle's main reducer. All vehicle rear axles are equipped with a reducer, which reduces the rotational speed from the driveshaft. The gear ratio is the transmission ratio—for example, if the driveshaft rotates at 4.1 r/s, it will be reduced to 1 r/s. The relationship between gear ratio and torque: The larger the gear ratio, the greater the output torque and the slower the output speed; the smaller the gear ratio, the smaller the output torque and the faster the output speed. Common applications of gear ratio: To achieve greater power (torque) output for climbing hills or heavy loads, selecting a relatively larger main gear ratio (such as 6.833) can meet the demand, but it also sacrifices vehicle speed.

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How to adjust the headlights of Volkswagen Polo?

What is the Difference Between Original and Genuine Auto Parts?

How to Properly Jump Start a Car?

What maintenance items should be done for a family sedan at 60,000 kilometers?

What Causes Noise in the Steering Gear?

What to Do When the Tachometer Needle Fluctuates During Cold Start?

What is the gear ratio of a transmission?

Is the Invoice Amount Important for Used Cars?

How to Push-Start a Car?

What's the reason for difficulty starting both when the engine is hot and cold?

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