When is the best time for the first maintenance of a new car?

What Causes Engine Shaking at Cold Idle but Normal When Warm?

Reasons for engine shaking at cold idle but normal when warm: 1. Excessive carbon buildup in the throttle body/intake manifold or clogged air filter: Excessive dirt in the throttle body/intake manifold or a clogged air filter reduces the cross-sectional area of the idle passage, causing less air to enter the cylinders than normal. This results in a richer air-fuel mixture, incomplete combustion, and engine shaking. 2. Intake pipe or EGR valve leakage: Leaks in the intake pipe or EGR valve allow more air to enter the cylinders than normal, creating a leaner mixture and reduced cylinder performance. If the EGR valve doesn't close properly, some exhaust gas enters the cylinders, increasing residual exhaust gas volume and worsening combustion, leading to reduced engine performance and shaking. 3. Faulty mass airflow sensor or intake pressure sensor: If the mass airflow sensor or intake pressure sensor malfunctions, the intake air volume cannot be accurately measured, causing inaccurate fuel injection. This results in abnormal air intake and uncertain air-fuel mixture concentration, leading to engine shaking.

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What are the reasons for Mercedes-Benz Parktronic malfunction?

Mercedes-Benz Parktronic malfunction may be caused by: dirt on the radar, hard drive damage, or corrosion of the fuse box base and fuses. More details are as follows: Dirt on the radar: Restart the vehicle or let it sit for a while before starting again. Clean the radar area with a tissue or car cloth, then restart the vehicle. If the issue persists frequently even after cleaning the radar, visit a 4S store for a software system upgrade. Hard drive damage: If the dashboard displays "Parking Assist System and PARKTRONIC malfunction" while the right multimedia screen keeps rebooting, and the rearview camera and radar are also unusable during the reboot process, with the P-gear indicator light turning red, it is likely due to [hard drive damage] or [other hardware] issues. Please visit a 4S store for inspection and confirmation. Replacement is free during the warranty period, but since parts need to be ordered from Germany, the process may take a while (around 1 month). Corrosion of the fuse box base and fuses: This may occur if water splashed onto the fuses during window tinting, causing corrosion of the fuse box base and fuses. The fuse base needs to be cleaned, and the fuses replaced. However, this issue is relatively rare.

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Can I change the motorcycle oil at 5,000 kilometers?

No, for a new motorcycle, the oil should be changed every 1,000KM initially, and then every 3,000KM thereafter. It is advisable to use specialized motorcycle oil whenever possible. According to the regulations of each motorcycle manufacturer, not using specialized oil is considered as voluntarily waiving the warranty rights, so it is recommended to use the original factory oil. Below are the functions of engine oil: 1. Lubrication: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing bush. To prevent excessive wear of parts, an oil film needs to be established between the two sliding surfaces. A sufficiently thick oil film separates the surfaces of the relatively sliding parts, thereby achieving the purpose of reducing wear. 2. Auxiliary cooling: Engine oil has a relatively low specific heat value and is located inside the engine, so it does not inherently have a cooling effect. However, due to the heat energy generated by fuel combustion inside the engine, during engine operation, the oil can carry heat back to the oil tank and then dissipate it into the air, assisting the radiator in cooling the engine. The actual cooling effect is provided by the water outside the engine casing.

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What is the fuel consumption of the Changan Yuexiang?

The fuel consumption of the new Yuexiang is as follows: combined cycle fuel consumption: 6.0L/100km; urban cycle fuel consumption: 9.3L/100km; suburban cycle fuel consumption: 6.3L/100km. How to calculate car fuel consumption: Fill up the car's fuel tank completely and reset the trip meter to zero. After driving for a period of time, refill the tank and note the amount of fuel added. Then, divide the amount of fuel added by the distance traveled to get the fuel consumption per kilometer. Introduction to car fuel consumption: Fuel consumption, commonly referred to as the amount of fuel consumed by a car after traveling 100 kilometers, usually refers to constant-speed fuel consumption. Constant-speed fuel consumption (Constant-Speed Fuel Economy) is a measure of a car's fuel efficiency when driving at a constant speed on good road conditions. Since constant-speed driving is a basic operating condition for cars on highways and is easy to measure, it is widely used. However, since cars in actual driving often experience various conditions such as acceleration, deceleration, braking, and engine idling, constant-speed fuel consumption is often lower than the actual fuel consumption, resulting in a significant difference.

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What Causes a Motorcycle Spark Plug to Be Wet and Black?

Motorcycle spark plugs becoming wet and black may be due to an overly rich fuel-air mixture, excessively high oil level, spark plug misfiring, leakage, abnormal ignition by the igniter, or mechanical faults. Methods to determine if a spark plug is damaged: Remove the spark plug and observe its condition based on the following appearance colors. A normal spark plug’s insulator skirt and electrodes should appear gray-white, gray-yellow, or light brown. If the spark plug has oil stains or deposits, the spark plug itself is not damaged. If the spark plug tip shows signs of blistering or black streaks.

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What does it mean to not participate in driver training for Subject 2?

It means not participating in the Subject 2 training. If the system shows "untrained," it indicates that the training hours have not been uploaded to the system. Being in an untrained state means you cannot schedule the exam, so you should consult your driving school to check the upload status of your training hours. Below are the precautions for the Subject 2 exam: 1. Fasten your seatbelt: Buckle up immediately after getting in the car. Make sure not to fasten it backward or to the passenger seat, as the system will directly deem the exam failed. Do not unfasten the seatbelt at any time during the exam. 2. Adjust the seat, etc.: After getting in the car, adjust the seat and rearview mirror, fasten the seatbelt, turn on the left turn signal, shift into first gear, and release the handbrake. These six steps are essential. Ensure all preparations are complete before starting. 3. No stopping during the test: There is no time limit for reversing into the garage, but note that stopping during the process is not allowed. If the wheels remain stationary for 3 seconds, the system will judge it as stopping midway. Therefore, controlling the speed is crucial. 4. The hill start time is 30 seconds: The hill start must be completed within 30 seconds. The system will give a verbal reminder every 10 seconds, and exceeding 30 seconds will result in an automatic failure.

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When is the best time for the first maintenance of a new car?

What Causes Engine Shaking at Cold Idle but Normal When Warm?

What are the reasons for Mercedes-Benz Parktronic malfunction?

Can I change the motorcycle oil at 5,000 kilometers?

What is the fuel consumption of the Changan Yuexiang?

What Causes a Motorcycle Spark Plug to Be Wet and Black?

What does it mean to not participate in driver training for Subject 2?

What Are the Causes of Abnormal Noises in a Car Engine?

Why is the car refrigerator light flashing and not cooling?

When is the ETC fee deducted on highways?

What is the range of the Wuling Hongguang Mini EV?