Should You Engage the P Gear or Pull the Handbrake First When Parking?

Why is it difficult to start a motorcycle when cold but normal when hot?

Motorcycle difficulty starting when cold but normal when hot is due to insufficient cylinder compression ratio or poor valve sealing. The cylinder is a cylindrical chamber in the engine where a piston is driven by the pressure or expansion force of the working fluid, including similar but non-cylindrical parts in certain special types of engines. The valve is specifically responsible for introducing air into the engine and expelling exhaust gases after combustion. In terms of engine structure, valves are divided into intake valves and exhaust valves. A motorcycle is a two- or three-wheeled vehicle driven by a gasoline engine, steered by handlebars for front-wheel turning. It is lightweight, flexible, and fast, widely used for patrol, passenger and cargo transportation, and also serves as sports equipment.

8

3

Share

Why does the car feel heavier and accelerate slower?

When the car feels heavier and accelerates slower, it is likely due to a dirty throttle body that needs cleaning. The throttle body is a controllable valve that regulates the air entering the engine, and there are two types: traditional cable-operated and electronic throttle bodies. After the air enters the intake pipe, it mixes with gasoline to form a combustible mixture for combustion. The throttle body is connected to the air filter at the top and the engine block at the bottom. In traditional engines, the throttle control mechanism operates via a cable or linkage rod, connecting the accelerator pedal on one end and the throttle linkage plate on the other. Electronic throttle bodies primarily use a throttle position sensor to control the throttle opening angle based on the engine's power demand, thereby adjusting the intake air volume.

14

5

Share

What are the symptoms of a broken exhaust manifold gasket?

Exhaust manifold gasket failure symptoms include: increased vehicle noise, excessive smoke in the engine compartment, and the smell of incomplete combustion. The exhaust manifold gasket consists of a sealing gasket and a heat shield, which integrates the heat shield for exhaust manifold insulation onto the exhaust manifold itself. The heat shield features a three-layer structure with non-metal heat insulation material sandwiched between two metal plates. The sealing gasket is composed of an upper sealing metal plate, two heat shield metal plates, and a lower sealing metal plate. The gasket itself has good rigidity and is resistant to bending, ensuring no gaps between the heat shield and cylinder head. This maintains the heat shield's insulation effectiveness, effectively reduces exhaust-side water jacket temperature in the cylinder head, minimizes temperature differences between intake and exhaust sides of the cylinder head water jacket, and extends the engine cylinder head's service life.

4

5

Share

What are the differences between the 2020 and 2021 Passat models?

The differences between the 2020 and 2021 Passat models are: 1. Different 0-100 km/h acceleration times: The 2020 Passat accelerates from 0-100 km/h in 9.3 seconds; the 2021 model does it in 9.1 seconds. 2. Different fuel tank capacities: The 2020 Passat has a 66-liter fuel tank; the 2021 model has a 68.5-liter tank. 3. Different curb weights: The 2020 Passat weighs 1,455 kg; the 2021 model weighs 1,470 kg. Taking the 2020 Passat 280TSI Business Edition (China VI) and the 2021 Passat 280TSI Business Edition as examples: Both models are produced by SAIC Volkswagen, classified as mid-size sedans, and use gasoline as their energy type.

6

4

Share

Why does the Tiida's collision avoidance system light flash?

Tiida's collision avoidance system light flashing is to remind the owner that there is an obstacle in front of the car, and it is necessary to pay attention to the speed not being too fast to avoid collision. The collision warning system can automatically detect the distance of obstacles ahead through sensors and estimate the possibility of a collision. If the system determines that the possibility of a collision is high, it will illuminate the collision warning system light through the sensors. Taking the Tiida TIIDA 2021 1.6L manual Ledong version as an example: the manufacturer of this car is Dongfeng Nissan, the level is compact car, the energy type is gasoline, the transmission is 5-speed manual, and the body type is 5-door 5-seat hatchback.

17

0

Share

How much engine oil is generally required for a BMW 1.5T engine?

BMW 1.5T engines generally require 4.5 liters of engine oil. When refilling, ensure the oil level is between the minimum and maximum marks on the dipstick. The oil level should not be below the minimum mark or exceed the maximum mark, as this could affect the engine's normal operation. The BMW 1.5T three-cylinder engine can use 5W-40 or 0W-40 grade engine oil. Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Method for adding engine oil: Park the car on level ground and slowly unscrew the oil filler cap in reverse. Proceed with the normal oil change process, ensuring the oil level remains slightly below the mark on the dipstick when adding oil. When reinstalling the oil filler cap, lubricate the cap opening with oil from the dipstick, then tighten it smoothly in the clockwise direction until secure. Method for selecting engine oil: Choose engine oil based on the engine's requirements. Do not use high-grade oil in a low-performance engine or low-grade oil in a high-performance engine. Always select oil that matches the engine specifications. Opt for multi-grade oil, which offers benefits such as fuel efficiency, extended lifespan, and high performance, providing better protection for the engine. Select oil viscosity based on the engine's operating condition. If the engine is in good condition and the seasonal temperature is low, use lower viscosity oil. If the engine is heavily worn and the temperature is high, choose higher viscosity oil.

4

Share

Should You Engage the P Gear or Pull the Handbrake First When Parking?

Why is it difficult to start a motorcycle when cold but normal when hot?

Why does the car feel heavier and accelerate slower?

What are the symptoms of a broken exhaust manifold gasket?

What are the differences between the 2020 and 2021 Passat models?

Why does the Tiida's collision avoidance system light flash?

How much engine oil is generally required for a BMW 1.5T engine?

What is the 0-100 km/h acceleration time of the Wuling Hongguang MINI EV?

What are the differences between the imported BMW 5 Series and the Brilliance BMW 5 Series?

Why Does the Car Jerk When Downshifting?

Does an A2 driver's license still require review if no points were deducted?