What are the differences between BFGoodrich KM3 and KO2?

How to Add Refrigerant?

Refrigerant addition steps: Start the vehicle, turn on the air conditioning for cooling, keep the refrigerant bottle mouth upward, open the low-pressure side valve for filling, and pay attention to the filling amount. Refrigerant, commonly known as 'snow seed,' is a working fluid used in refrigeration and air conditioning systems to transfer heat energy and produce cooling effects. Based on working methods, refrigerants can be classified into primary refrigerants and secondary refrigerants; based on material properties, they can be divided into natural refrigerants and synthetic refrigerants. Refrigerant is an intermediate substance in the refrigeration process, which first cools down by receiving the cooling capacity of the refrigerant and then cools other substances to be cooled. There are gaseous refrigerants, liquid and solid refrigerants, gaseous refrigerants, etc.

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What Causes High Idle Speed During Cold Start?

The reason for high idle speed during cold start is that the combustion chamber temperature in the cylinders is low, leading to poor gasoline atomization. To meet the necessary combustion conditions, the engine ECU increases fuel injection, resulting in higher RPM. This is a normal phenomenon. After the engine warms up, the RPM will gradually decrease to around 800-1000. The main causes of engine shaking during cold start include: 1. Excessive carbon deposits on the throttle body, fuel injectors, or intake passages; 2. Mechanical failures in ignition coils, spark plugs, or fuel injectors; 3. Low oil pressure or cylinder pressure; 4. Poor fuel quality; 5. Damaged or dirty idle control valve. Solutions: 1. Check and clean carbon deposits on spark plugs; 2. Inspect the coolant temperature sensor and replace if necessary.

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Are Headlights the Same as Low Beams?

Headlights are not the same as low beams. Low beams are a type of headlight. Headlights refer to the vehicle's high beams, low beams, and turn signals, primarily serving as lighting devices for nighttime driving. The illumination effectiveness of headlights directly impacts nighttime driving operations and traffic safety. Usage methods for headlights: 1. During vehicle use, it is necessary to keep the headlight lens clean, especially after driving in rainy or snowy weather, as dirt can reduce the illumination performance of the headlights, so timely cleaning is required; 2. When meeting another vehicle at night, the high beams should be turned off in advance, and both vehicles should switch to low beams when they are more than 150 meters apart to ensure driving safety. When high beams are on, the oncoming driver's visibility is obstructed, making it difficult to judge, and driving safety cannot be guaranteed.

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What Causes Engine Noise During Cold Start?

Engine noise during cold start occurs because after the car has been parked for a day, the engine oil has mostly flowed back to the bottom of the engine. During a cold start, the oil pump cannot immediately establish oil pressure or form an oil film between components. The valves inside the cylinder head lack lubrication during cold starts, resulting in some valve clearance whether it's hydraulic lifters or mechanical rocker arms, which causes the noise. After the engine runs for a while, oil pressure is established, the oil film forms, and the oil temperature rises. Once the engine operates normally, the noise disappears. Apart from oil-related reasons, another component that can cause noise is the carbon canister solenoid valve. Its function is to open the solenoid valve between the carbon canister and the intake manifold when the engine starts, allowing the gasoline vapor adsorbed by the carbon canister to be drawn into the cylinders under the vacuum of the intake manifold to participate in combustion. This not only reduces emissions but also lowers fuel consumption, but it can also produce noise during operation.

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What Causes the Sizzling Sound When Starting a Cold Engine?

The sizzling sound when starting a cold engine is caused by the valves. After the car has been parked for an extended period, the engine oil flows back to the oil pan, leaving the top of the engine, specifically the valve chamber, with insufficient oil. Since the valves lack the sealing and lubrication provided by the oil, this can result in the sizzling noise. Additionally, sometimes the car's belt may be loose, leading to a similar sound. In such cases, it is advisable to visit a repair shop to have the belt checked and tightened appropriately to see if the issue resolves. Regular maintenance of the belt is essential, ensuring it is neither too loose nor too tight. You can manually check the belt's tension by pulling on it; if it feels excessively loose or tight, it's best to have it inspected by a professional. Furthermore, if the sizzling sound occurs when applying the brakes while driving, it indicates that the brake pads have worn down to their limit and are now grinding against the brake discs. In this situation, immediate inspection and repair at a service center are necessary to identify the exact cause of the noise and avoid further driving under such conditions.

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How to Remove the Middle Row Seats in the Elysion?

The middle row seats in the Elysion cannot be removed; only the seats in the last row can be taken out. The Elysion is a mid-to-high-end MPV launched by Dongfeng Honda. It is equipped with a 2.0L naturally aspirated engine paired with a 5-speed automatic transmission and offers both two-wheel-drive and four-wheel-drive versions. The maximum horsepower is 146ps, and the maximum torque is 175nm. In terms of body dimensions, the Elysion measures 4935mm in length, 1845mm in width, and 1805mm in height, with a wheelbase of 2900mm. The front suspension is a MacPherson independent suspension, while the rear suspension is a torsion beam non-independent suspension.

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What are the differences between BFGoodrich KM3 and KO2?

How to Add Refrigerant?

What Causes High Idle Speed During Cold Start?

Are Headlights the Same as Low Beams?

What Causes Engine Noise During Cold Start?

What Causes the Sizzling Sound When Starting a Cold Engine?

How to Remove the Middle Row Seats in the Elysion?

What Components Make Up the Cooling System?

What Causes Brake Noise During Cold Start?

What Causes the Occasional Clicking Noise When the Car Air Conditioner is On?

Is It Illegal to Block Rear Car Windows?