What Are the Functions of Coolant?

What Causes Engine Shaking at Low RPM?

Engine shaking at low RPM can be caused by the following reasons: 1. Dirty throttle body: Carbon deposits may absorb some fuel during cold starts. If the fuel doesn't completely enter the cylinder for combustion, it can lead to unstable idle and difficulty starting. 2. Slight lateral tilting of engine transmission: Due to the angle between the half-shaft axis and inner CV joint axis, the force application point continuously changes along the axial direction during CV joint rotation, causing vibration. 3. Ignition system malfunction: For ignition system issues, check spark plugs, ignition wires, and coils. Typically, leaking ignition wires or carbon-fouled spark plugs can cause shaking.

2

4

Share

What Causes White Smoke from Diesel Engine Exhaust Pipe?

White smoke from a diesel engine exhaust pipe is caused by out-of-round pistons or cylinder liners, leading to excessive blow-by and oil burning. It is necessary to repair and inspect the roundness of the cylinder liners, piston rings, and the gap between piston ring ends. Diesel engines are internal combustion engines that generate power by burning diesel fuel. They were invented by German engineer Rudolf Diesel, and diesel fuel is named after him (Diesel). Diesel generators are known for their high torque and good fuel efficiency. The working process of a diesel engine is similar to that of a gasoline engine, with each cycle consisting of intake, compression, power, and exhaust strokes.

2

3

Share

How to Activate the Sport Mode in Passat?

To activate the Sport Mode in the Passat, shift into D gear and then pull back once to engage S gear, which will enter this mode. Taking the Passat 2021 280TSI Business Edition as an example: The manufacturer of this car is SAIC Volkswagen, classified as a mid-size sedan, with a gasoline energy type, and a body style of a 4-door, 5-seat sedan. The car's dimensions are 4933mm in length, 1836mm in width, and 1469mm in height, with a wheelbase of 2871mm. It features a turbocharged intake form, front-wheel drive, front suspension type of MacPherson independent suspension, rear suspension type of multi-link independent suspension, and electric power steering.

14

5

Share

How to Repair a Motorcycle with No Power?

This issue is typically caused by a broken wire from the battery cable to the ignition switch or a disconnected main power line after the ignition switch, resulting in a complete loss of power. To resolve it, check whether the battery terminals are improperly installed, if the fuse circuit is blown or has poor contact, and verify if the main power output from the ignition switch is functioning properly. Below are additional details: Inspection Method: To troubleshoot this issue, first install a battery with normal charge, then use a multimeter to check the wiring section by section. Generally, the fault point can be easily identified. For no power, simply follow the inspection path from the battery positive terminal, fuse, to the key switch.

15

1

Share

Will modifying car interiors affect the annual inspection?

Modifying car interiors will not affect the annual inspection, but exterior modifications will. The annual inspection refers to a comprehensive safety check conducted every year or every two years, covering aspects such as the horn, brakes, axle load, chassis, ignition system, lighting system, exhaust system, and license plate installation. New regulations clearly state that modifications can include changing the body color, replacing the engine, or replacing the body or frame. Within 10 days of the modification, the owner must directly go to the vehicle management office to complete the modification registration. The vehicle management office will process the relevant procedures on the same day, including noting the changes in the vehicle registration certificate, retrieving the old driving license, and issuing a new one.

3

5

Share

How to Repair Scratches on Car Tire Rims?

The methods to repair scratches on car tire rims are as follows: 1. Clean the rim. You can use paint thinner to wipe around the scratches to remove dirt. For the deepest parts of the scratches where dirt is hard to remove, use a toothpick to thoroughly clean them. To avoid accidentally painting unaffected areas, carefully apply masking tape around the scratches. 2. Prepare the brush tip and apply touch-up paint. The paint will shrink slightly as it dries, so apply it slightly raised. 3. After it is completely dry (about a week), use waterproof paper soaked in soapy water to smooth the surface. Then, use a polishing compound to restore shine and finally apply wax.

13

5

Share

What Are the Functions of Coolant?

What Causes Engine Shaking at Low RPM?

What Causes White Smoke from Diesel Engine Exhaust Pipe?

How to Activate the Sport Mode in Passat?

How to Repair a Motorcycle with No Power?

Will modifying car interiors affect the annual inspection?

How to Repair Scratches on Car Tire Rims?

Why is the engine warning light on in the Tiggo 8?

What are the reasons for the engine warning light in Mercedes GLE?

What Causes High Engine RPM Without Corresponding Speed Increase?

Which car has a square clock in the middle?