How many liters of engine oil should be added to a BMW 730?

What are the reasons for engine idling vibration that stops after accelerating?

When a car's engine vibrates at idle but stops vibrating after accelerating, the common reasons are as follows: 1. Severe carbon deposits inside the engine: Carbon buildup on the throttle body, fuel injectors, spark plugs, and pistons can absorb combustion heat when accumulated to a certain extent, leading to knocking or detonation. 2. Ignition system issues: Excessive carbon deposits on spark plugs or insufficient ignition voltage can cause misfiring in one or multiple cylinders, resulting in insufficient engine power and vibration. 3. Unstable fuel pressure: The fuel system includes components such as the fuel tank, fuel filter, fuel pump, oil-gas separator, fuel lines, and fuel gauge. Any issue with these components can lead to unstable fuel pressure. 4. Aging of internal engine components: This situation typically occurs after the vehicle has been used for a certain number of years or mileage. Severe reduction in engine power can cause vibration, and such vehicles are prone to shaking at low RPMs, with symptoms improving slightly after accelerating.

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What Causes a Mercedes-Benz to Trigger Radar Alerts Without Obstacles?

Mercedes-Benz owners often encounter situations where the radar continuously alerts despite no obstacles being present. Here are the reasons why a Mercedes-Benz radar may sound without obstacles: 1. License Plate Issues: Particularly with front radars, which generally require a wide detection range, the radar's ultrasonic waves are fan-shaped. If the license plate frame is too large or the plate is bent or deformed, it may enter the radar's detection range, causing false alarms. This issue commonly occurs with new cars or those that have recently had their license plates reinstalled. 2. Dirty or Obstructed Radar Sensors: This is also quite common. For example, after washing the car or driving through muddy roads in the rain, mud or rainwater on the bumper may be detected by the radar or directly cover the sensors. 3. Hardware-Related Radar Issues: Such as dented sensors, damaged or deformed sensor mounts, or faulty sensors themselves. 4. Sensor Installation Problems: On some modified vehicles, careless installation may cause the sensors to angle downward or be mounted too low, leading to false alarms when encountering small bumps or uneven ground. 5. Obstacles on the Vehicle's Side: It's important to note that radar sensors do not only emit ultrasonic waves forward/backward. If there are obstacles on the side of the vehicle and they are relatively close, they may also be detected.

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How Long Does It Take to Learn Automatic Transmission Subject 3?

It usually takes two to three weeks. 1. Introduction to Subject 3: The Road Safety Driving Test (Subject 3) is part of the motor vehicle driver's license assessment and is the abbreviation for the road driving skills and safe civilized driving knowledge test in the motor vehicle driver's examination. 2. Content of Subject 3: Generally includes: vehicle preparation, light simulation test, starting, driving in a straight line, gear shifting operation, lane changing, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, passing pedestrian crossings, passing school zones, passing bus stops, meeting vehicles, overtaking, making U-turns, and night driving.

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How Long Does It Take to Lift Engine Torque Limitation?

Engine torque limitation can be lifted within one day. The most obvious sign of engine torque limitation is the lack of power in the vehicle; no matter how much you accelerate, it doesn't help, and the tachometer doesn't rise. The reasons for engine torque limitation are as follows: 1. Electronic system failure: After a vehicle malfunctions, the onboard computer generates fault codes. During repairs, technicians use professional diagnostic computers to read these fault codes, helping them quickly locate the issue and identify the cause. 2. Mechanical failure: Malfunctions in the urea pump, urea nozzle, or speed limiter aging can affect engine operation. It is essential to perform regular vehicle maintenance and seek professional repair services promptly when issues are detected.

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Are Traffic Police Allowing the Installation of Anti-Tailgating Strobe Lights?

Traffic police currently do not allow vehicles to privately install anti-tailgating strobe lights. According to Article 97 of the Road Traffic Safety Law of the People's Republic of China: Illegally installed alarms and signal lights will be forcibly removed and confiscated by the traffic management department of the public security organ, and a fine will be imposed. The installation of lighting equipment on vehicles must comply with the following regulations: 1. The lamps of motor vehicles should be installed firmly, intact, and effective, and should not become loose, damaged, lose function, or change the direction of illumination due to vehicle vibration; 2. All light switches should be installed firmly and operate freely, and should not switch on or off by themselves due to vehicle vibration. The position of the switches should be convenient for the driver to operate; 3. Except for turn signal lights, hazard warning signals, and signal lights installed on fire trucks, ambulances, engineering rescue vehicles, and police cars, other external lamps are not allowed to flash.

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Can You Keep Driving with a Noisy Release Bearing?

You cannot continue driving with a noisy release bearing. The causes of a noisy release bearing are as follows: 1. Poor Lubrication: Insufficient grease inside the bearing leads to inadequate lubrication between the bearing raceways and balls, requiring timely replenishment of lubricant. 2. Aging of Diaphragm Spring and Bearing Inner Ring: After prolonged use, the elasticity of the diaphragm spring significantly decreases, and the bearing inner ring may also sag, causing contact between the outer and inner rings. The aging spring and inner ring need to be replaced promptly. 3. Excessive Friction Between Bearing Inner Ring and Diaphragm Spring: If the inner ring and diaphragm are installed too tightly, significant friction can occur. Adjusting the tightness between the bearing inner ring and the diaphragm may be necessary. 4. Inadequate Cleaning Inside the Release Bearing: If the bearing is not cleaned properly, rotation may become stiff, leading to noise. Regular cleaning of the bearing inner ring and proper maintenance are essential.

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How many liters of engine oil should be added to a BMW 730?

What are the reasons for engine idling vibration that stops after accelerating?

What Causes a Mercedes-Benz to Trigger Radar Alerts Without Obstacles?

How Long Does It Take to Learn Automatic Transmission Subject 3?

How Long Does It Take to Lift Engine Torque Limitation?

Are Traffic Police Allowing the Installation of Anti-Tailgating Strobe Lights?

Can You Keep Driving with a Noisy Release Bearing?

What Causes Jerking When Accelerating in a Manual Transmission Car?

What is the difference between cars with 't' and 'l'?

What is the recommended speed for a new car on the highway?

Do I need to replace my driver's license after the one-year probation period?