What Does 'Ji Qu' Mean?

What causes the flywheel noise in Audi A3?

Audi A3 flywheel noise causes: 1. Analysis of engine noise characteristics: Engine noises are often related to engine speed, load, temperature, and working cycle. By analyzing the characteristics of the noise, its variation pattern can be identified. 2. The relationship between noise and engine speed: The presence of most common engine noises depends on the engine's speed state. Noises only exist at idle or low speeds. Possible causes include: Excessive clearance between piston and cylinder wall; 3. Piston pin installed too tightly or connecting rod bearing installed too tightly; Excessive clearance between tappet and its guide hole; Wear of camshaft profile; Sometimes, a loose starter clutch causes pulley noise (more noticeable during speed changes). When maintaining a certain speed, the noise becomes chaotic, and short noises are emitted successively during rapid deceleration. Possible causes include: Cracked camshaft timing gear or loose fixing nut; Broken crankshaft; Loose piston pin bushing; Excessive axial clearance of camshaft or loose camshaft bushing.

18

4

Share

Is the BMW 3 Series Short Wheelbase Imported?

Not all versions of the new BMW 3 Series, whether long or short wheelbase, are domestically produced. Currently, only the long wheelbase version is produced domestically. The standard wheelbase version is only available through imports. The main differences between the long wheelbase and standard wheelbase versions lie in the increased body wheelbase, longer body, more spacious interior for enhanced comfort, and better driving stability. The BMW 3 Series long wheelbase is domestically produced and has been lengthened to suit the Chinese market, while the standard wheelbase is imported, offering less space but with no significant technical differences. Below are the relevant details: 1. In terms of appearance, the new car's design remains unchanged. However, the overseas new 4 Series' 18-inch 848M wheels will be equipped on the 325i M Sport Package model, while other M Night Shadow models offer them as optional. The interior also comes standard with Volcano Red Sensatec leather upholstery across the lineup. 2. In terms of configuration, the new car comes standard with cruise control and a rearview camera with parking assistance. Keyless entry is standard on all models except the 320i/Li.

6

3

Share

Symptoms of BMW Engine Cover Leakage?

BMW engine cover (valve cover) leakage symptoms are as follows: 1. Valve cover leakage can lead to weak vehicle performance, incomplete combustion of fuel in the combustion chamber, resulting in increased fuel consumption; 2. It causes slow acceleration, difficulty in engine starting, reduced power, incomplete combustion, leading to severe carbon buildup, and may even cause individual cylinders to stop working; 3. It can also result in a "whooshing" sound when the engine is running, with particularly loud noise at the crankcase, along with smoke coming out from the crankcase vent or oil filler port, and the noise increases during acceleration. For BMW engine cover (valve cover) leakage, the engine cover can only be replaced at a repair shop or 4S dealership.

2

0

Share

Where is the radiator located in the Hyundai Elantra?

The radiator of the Hyundai Elantra is located in front of the engine and behind the bumper. Below are the maintenance methods for the car radiator: 1. Park the vehicle and turn off the engine. Wait for the coolant temperature to drop, then open the expansion tank and add radiator cleaner; 2. Start the engine and let it idle for 5-10 minutes after the cooling fan activates; 3. Turn off the engine and remove the front bumper; 4. Ensure the coolant has completely cooled, then drain the radiator cleaner along with the coolant, and finally replace it with new engine coolant. Additional information: The car radiator generally refers to the heat exchanger. The radiator is part of the car's cooling system, and the radiator in the engine's water cooling system consists of three parts: the inlet chamber, outlet chamber, main plate, and radiator core.

5

Share

What is the weight of a Dayun 150 three-wheeled motorcycle?

Dayun 150 three-wheeled motorcycle has a curb weight of 340 kg. Tire specifications: front 4.50-12ULT, rear 4.50-12ULT. Wheelbase: 2070. Overall length 3260, overall width 1290, overall height 1350. Front brake: hand brake. Rear brake: foot brake. Front and rear brakes: drum type. Generally, a motorcycle consists of seven parts: engine, transmission part, running gear, operation and braking part, cab and cargo compartment part, electrical part, and instrument part. A three-wheeled motorcycle is equipped with three wheels and a carriage or flatbed for carrying people or goods. A two-wheeled motorcycle can only carry people. Three-wheeled motorcycles belong to motor vehicles and should obtain a motor vehicle driving license according to the law.

13

1

Share

Where is the steering angle sensor located in the Volkswagen Tiguan

The steering angle sensor in the Volkswagen Tiguan is located at the bottom of the steering column. The steering angle sensor in a vehicle is used to detect the rotation angle and direction of the steering wheel. The steering angle sensor consists of components such as a photoelectric coupling element and a perforated slot plate. The photoelectric coupling element includes a light-emitting diode and a phototransistor. The perforated slot plate is positioned between the light-emitting diode and the phototransistor and contains numerous small holes. It is a device used to determine the angular position of a shaft, such as the steering column, comprising a coil assembly, coil support, and a coupler element with an angular position related to the shaft's angular position. The steering wheel angle sensor is widely used in vehicle dynamic stability control systems. Its stability and accuracy are directly related to driving safety. Compared to the commonly used 'ABS system' in vehicles today, it not only includes all the functions of the 'ABS system' but can also actively apply brakes when the vehicle loses stability, thereby controlling the 'body posture' and ensuring driving safety to some extent.

19

2

Share

What Does 'Ji Qu' Mean?

What causes the flywheel noise in Audi A3?

Is the BMW 3 Series Short Wheelbase Imported?

Symptoms of BMW Engine Cover Leakage?

Where is the radiator located in the Hyundai Elantra?

What is the weight of a Dayun 150 three-wheeled motorcycle?

Where is the steering angle sensor located in the Volkswagen Tiguan

What does it mean when the EA888 engine reports a too rich system in cylinder 1?

Can the BMW R 1250 GS use 92 octane gasoline?

What to Do When There Is No Pressure in the Manual-Automatic Transmission Accumulator?

Honda CD5 Engine Model