On summer car inspection and maintenance

Summer is a challenging season for vehicles, marked by high temperatures and frequent rain. These conditions can lead to multiple car failures, but by carefully observing common issues, we can identify patterns and ensure our vehicles perform reliably. Key areas prone to failure during summer include the cooling system, air conditioning system, fuel supply system, and engine components. Proper inspection and maintenance are essential to keep your car running smoothly. **1. Cooling System** One of the most common summer issues is "boiling over" of the coolant, which can lead to engine overheating and breakdowns. Before checking the cooling system, ensure other components like fuel, engine oil, spark plugs, antifreeze, ignition timing, and idle air-fuel ratio are all in good condition. Then inspect the radiator: if one side is hot and the other cold, there may be internal blockage. You can use a pressure hose to flush the radiator; if clogged, add a small amount of cleaning agent and check for leaks. Next, check the thermostat. Removing it is not recommended, as it regulates coolant flow between the small and large cycles. A faulty thermostat can cause temperature fluctuations. Also, inspect the water pump for leakage, impeller corrosion, or misalignment. Fans, especially those with electromagnetic or silicone clutch mechanisms, should be checked for proper operation and signs of wear. In addition, make sure the exhaust system, oil cooler, and airflow guide (air ring) are functioning correctly. Regular maintenance includes checking the tightness of the fan belt, thermostat sensitivity, and coolant level. Flushing the system to remove scale is also important for optimal performance. **2. Air Conditioning System** During summer, poor cooling is a common issue. To maintain the AC system, regular checks and maintenance are necessary. One way to test is by feeling the temperature difference between the low and high-pressure lines. If the refrigerant is low, bubbles may appear in the sight glass. Leaks can be detected using soapy water or by looking for grease on connections. Also, check the refrigerant level and system pressure. Normal low-pressure should be around 0.15–0.2 MPa, while high-pressure should range from 1.35–1.55 MPa. If pressure is uneven, the compressor may be faulty. The dryer or expansion valve should also be inspected, as they are critical components that may need replacement after five years of use. Additionally, electronic control systems in modern cars require attention to ensure stable and efficient cooling. **3. Fuel Supply System** High temperatures can cause vapor lock in the fuel system, where gasoline evaporates and creates air pockets, disrupting fuel flow. To prevent this, you can cool the fuel pump with a wet cloth or move the vehicle to a shaded area. Adjusting the pump’s position away from the exhaust and adding heat shields can also help. Installing one-way valves at the pump inlet and outlet increases resistance and reduces the risk of vapor lock. **4. Engine and Lubrication System** Engines tend to run hotter in summer, so using high-viscosity oils and shortening oil change intervals is crucial. For luxury vehicles, synthetic oils with higher viscosity ratings (like 5W50) are recommended. Ensure the transmission, differential, and brake fluid are suitable for summer conditions. High-quality antifreeze and engine oil are essential to prevent overheating and mechanical stress. **5. Charging System** The battery and charging system should be regularly checked. Overcharging and electrolyte evaporation are common in summer. Keep the battery filled with distilled water, ensure vents are clear, and adjust the generator regulator to reduce current. This helps prevent damage and extends battery life. In summary, proper summer maintenance ensures your car runs safely and efficiently. By understanding common issues and performing timely checks, you can avoid breakdowns and enjoy a smooth driving experience throughout the season.

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