What is a Car Anti-Flooding Device?

What is the appropriate tire pressure?

There are two scenarios for appropriate car tire pressure: 1. The front tire pressure should be 2.2 to 2.3 bar when unloaded and 2.4 to 2.5 bar when fully loaded. 2. The rear tire pressure should be 2.4 to 2.5 bar when unloaded and 2.6 to 2.8 bar when fully loaded. The recommended tire pressure range may vary depending on the tire model, and the standard tire pressure is usually indicated by the manufacturer at the time of production. Tire pressure can also be affected by temperature changes. In high temperatures or during summer, it is advisable to reduce the tire pressure by 0.1 to 0.2 bar. Conversely, in extremely low temperatures, such as during winter, it is recommended to increase the tire pressure by 0.1 to 0.2 bar.

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What are the steps to replace the cabin air filter?

The cabin air filter is an important component of the air conditioning system. Here are seven steps to replace the filter: 1. First, open the glove compartment cover located behind the front passenger seat. 2. Locate the fixing buckle on the right side of the glove compartment and pull it outward firmly. 3. Remove the fixing buckle of the glove compartment cover to detach it. 4. Squeeze both sides of the glove compartment inward with both hands to take it down. 5. After removing the glove compartment, you will see the cabin air filter cover. Press the fixing buckles on both sides of the cover firmly to remove it. 6. Pull out the old cabin air filter outward. 7. Install the new cabin air filter and reassemble everything in reverse order (pay attention to the installation direction of the cabin air filter).

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What to Do When the Spark Plug Cannot Be Removed?

There are several methods to remove a stuck spark plug: 1. Welding Method: Weld a thin, long iron bolt onto the broken spark plug head, then remove the broken spark plug. This method usually requires multiple welding attempts to succeed and is relatively difficult. 2. Reverse Thread Tool: Since broken spark plugs are a common occurrence, specialized reverse thread tools for removing broken spark plugs are widely available. Here’s how to use a reverse thread tool: (1) Use the reverse thread tool to tap threads inside the broken spark plug head, then twist the tool to remove the broken piece. (2) During the threading process, fine metal shavings may fall into the cylinder. After removing the broken piece, use a magnetic rod to clean them out as much as possible. Spark plugs typically have a lifespan of around 100,000 kilometers, so they don’t need frequent replacement. However, since spark plugs function deep inside the cylinder, they must endure immense pressure and temperature. Experiments show that the pressure during combustion can reach up to 5,000 kPa, and temperatures can soar to 2,000 degrees Celsius. Therefore, even if they don’t need frequent replacement, regular inspections are essential.

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What are the causes of engine shaking and abnormal noise?

Engine is a key component of many machines. There are three main reasons for its shaking and abnormal noise: 1. Root cause: Engine mount damage. The mount bears continuous repeated impacts, making rubber prone to fatigue. The generated high heat will inevitably cause vibration-damping rubber to age over time, weakening its damping effect. Replacement is needed to prevent engine vibration from transmitting into the cabin during operation. 2. Damage to the soft rubber connection between engine and frame. Natural rubber lifespan is 5 years, while mount rubber is designed for 80,000-100,000 km. Both pure rubber and hydraulic mounts face aging/cracking issues requiring inspection and replacement. 3. Other causes: Issues like flywheel, cylinder misfire, or carbon buildup can also cause idle shaking.

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How often should Nissan transmission fluid be changed?

It is recommended to change the Nissan CVT transmission fluid approximately every 40,000 to 60,000 kilometers, and it is necessary to use the manufacturer's specific fluid. Below is an introduction regarding Nissan transmission: 1. Taking the Nissan CVT transmission as an example, most failures occur around 100,000 to 150,000 kilometers, and their common characteristic is that the transmission fluid has never been changed. Conversely, those that had the transmission fluid changed before this mileage rarely encountered issues. 2. The working environment of CVT transmission fluid is relatively harsh, and oxidation is inevitable under high temperature and high pressure. At the same time, moisture in the air can be absorbed by the transmission fluid, leading to deterioration of the fluid quality, which reduces its cleaning, lubrication, and cooling functions. 3. If symptoms such as sluggish acceleration, jerky gear shifts, or rough shifting appear while driving, it may be time to consider changing the transmission fluid.

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What are the safety precautions when maintaining the cooling system?

Safety precautions when maintaining the cooling system include the following: After parking, check for large amounts of water under the car and any water traces in the engine compartment. Regularly clean the front radiator and condenser, using high-pressure air or a water gun. When the water temperature is high, observe whether the electric fan is running or turn on the air conditioning. During routine maintenance, add antifreeze as required. Adding antifreeze can raise the boiling point of the coolant, reduce scale formation, and minimize impurities. When checking the engine coolant level, wait until the engine has cooled down, then inspect the coolant level in the reservoir. If the level is between the high and low marks on the reservoir, it indicates sufficient fluid. If the level is low, add coolant. If the coolant in an automatic transmission vehicle appears milky white or pink, it is often due to transmission cooling oil leaking into the radiator. Stop the vehicle immediately and contact a repair shop. If the coolant is insufficient, top it up until it overflows, avoiding the use of hard water (which can cause scale buildup). If the coolant becomes dirty or full of scale, drain all the coolant and clean the cooling system. Causes and solutions for cooling system failures: Low coolant level in the cooling system: Cracks or leaks in the radiator or damage to the cylinder water jacket, causing coolant to leak; damaged inlet or outlet hoses leaking water; faulty switches leading to fluid leakage. Solution: Stop the leak. If severe, replace the radiator. Replace the inlet and outlet hoses; replace the switch. Excessive engine coolant: Insufficient coolant; broken or loose fan drive belt, reducing efficiency; excessive scale in the cylinder water jacket and radiator, affecting cooling performance; abnormal water pump operation causing poor water circulation; bent radiator fins or air in the connecting hoses; faulty water temperature gauge or sensor. Solution: Add coolant; replace or tighten the belt; clean the cooling system; repair the water pump; inspect the outlet hose, eliminate any constriction, and repair the radiator fins.

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What is a Car Anti-Flooding Device?

What is the appropriate tire pressure?

What are the steps to replace the cabin air filter?

What to Do When the Spark Plug Cannot Be Removed?

What are the causes of engine shaking and abnormal noise?

How often should Nissan transmission fluid be changed?

What are the safety precautions when maintaining the cooling system?

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