How many liters of fuel are left when the fuel gauge light comes on in the Haval F7?

At what temperature does the BMW thermostat open?

There is no standard opening temperature. The electronic thermostat is controlled by the DME (engine control unit), which determines when to open based on various parameters, such as: ambient temperature, engine coolant temperature, cabin heating temperature, electric water pump speed, transmission oil temperature, etc. Location of the BMW thermostat: The thermostat in BMW vehicles is located at the lower right side of the engine, near the water pump. Introduction to the thermostat: When the coolant temperature is below the specified value, the refined paraffin inside the thermostat's temperature-sensitive body remains solid, and the thermostat valve closes the passage between the engine and the radiator under the action of the spring, causing the coolant to return to the engine via the water pump.

11

1

Share

Should the coolant level be checked when the engine is hot or cold?

Coolant level is more accurate when the engine is cold. Coolant, fully known as antifreeze coolant, is designed to prevent freezing. It protects the radiator from cracking and the engine cylinder block from freezing damage during cold seasons when the vehicle is parked. Antifreeze is not just for winter use; it should be used year-round. In standard vehicle maintenance, the engine coolant should be replaced every year. Coolant consists of three components: water, antifreeze, and additives. Depending on the antifreeze component, it can be classified into alcohol-based, glycerol-based, ethylene glycol-based, and other types of coolant. If the coolant level is at the lower limit when the engine is cold and in the middle when hot, this indicates insufficient coolant. Generally, the adequacy of coolant is determined when the engine is cold. Normally, the coolant level should be between the upper and lower limits. Therefore, if the coolant level is at the lower limit when the engine is cold, there is an issue, and coolant should be added immediately. When the engine heats up, the coolant level rises because the engine temperature increases, causing the coolant to expand and the level to rise. Typically, coolant is stored in the main reservoir and the overflow tank. The overflow tank should only be filled halfway or up to the maximum mark to accommodate the expanding coolant when the engine is hot. If the overflow tank is completely full, it cannot hold the expanding coolant when the engine is hot, leading to overflow and loss of some coolant. If a small amount of coolant needs to be added, it can be poured into the overflow tank. However, if there is no coolant in the main reservoir, it should be added directly to the main reservoir, as adding it through the overflow tank would be slower.

17

3

Share

What is the wing at the back of a sports car called?

The wing at the back of a sports car is called a spoiler. It is part of the car's aerodynamic kit. The main function of the car spoiler is to reduce the lift at the rear of the vehicle. If the lift at the rear is greater than that at the front, it can easily lead to excessive steering, reduced rear wheel grip, and poor high-speed stability. Below is extended information about the spoiler: 1. Origin: The design principle of the car spoiler is based on the design of aircraft wings. For a long time in the past, this design was widely used in racing cars and later in ordinary cars. 2. Function: The reasonable design of the spoiler is directly related to the performance of the racing car. There is an oblique angle between the nose and tail wings of a racing car, which helps the car turn safely and quickly on the track. It enables the racing car to achieve good downforce in corners, while controlling wind resistance on straight tracks.

4

1

Share

What is the situation when the rear charging port of Jetour X90 has no power?

There are two situations when the rear charging port of Jetour X90 has no power: connecting the phone through the USB port, but the phone shows no charging display; connecting the phone through the USB port, the phone shows a charging display, but it just doesn't charge. No charging display on the phone: The vehicle USB port fuse is blown (find the corresponding fuse through the vehicle manual, and replace the spare fuse in time if there is a blown phenomenon). The phone charging port spring is loose, causing poor contact. The phone shows a charging display, but it doesn't charge: If this happens, it means that the USB port is only for reading U disk data, not for charging the phone. You can check the application range of the USB port through the vehicle manual.

8

2

Share

Does the Chery 484 engine VVT pulley need timing alignment?

Chery 484 engine VVT pulley requires timing alignment. Issues with the VVT timing pulley may cause timing belt skipping, leading to symptoms such as unstable idle speed and poor acceleration in the engine. Nature of VVT: The technology employed in VVT engines, namely Continuous Variable Valve Timing technology, can continuously adjust the engine's valve opening/closing timing and air intake volume, thereby improving engine power, optimizing torque curves, and reducing fuel consumption. Working principle of VVT: The working principle of VVT is that the crankshaft drives the camshaft through timing belts, gears, or chains. The profile and position of camshaft lobes are typically optimized for specific engine speeds, which usually reduces torque at low RPM and power at high RPM. VVT technology enables adjustments based on engine operating conditions, enhancing engine efficiency and power output.

18

4

Share

Where is the OK button on the Besturn B70?

The OK button on the Besturn B70 is located on the control panel. This button is used to operate the trip computer. Press lightly to confirm (OK), press and hold to reset (RESET). Function of the trip computer: The trip computer is a high-tech electronic product that uses advanced technology. It is used to read vehicle data. This system continuously monitors the engine's operating conditions to check if the vehicle's emissions exceed standards. If the vehicle's emissions exceed standards, it will immediately issue a warning. Function of OK/RESET: OK/RESET is a multifunctional button. It serves as a confirmation button when adjusting the clock; when in the short-distance mileage/total mileage function, it is used to toggle display/reset.

17

2

Share

How many liters of fuel are left when the fuel gauge light comes on in the Haval F7?

At what temperature does the BMW thermostat open?

Should the coolant level be checked when the engine is hot or cold?

What is the wing at the back of a sports car called?

What is the situation when the rear charging port of Jetour X90 has no power?

Does the Chery 484 engine VVT pulley need timing alignment?

Where is the OK button on the Besturn B70?

Is it normal for the Volkswagen temperature gauge to show 90 degrees?

How to Yield When Turning Left, Right, or Going Straight?

What does the right brake light indicator on a Mercedes-Benz mean?

In which year was the Bora Legend produced?