Why is coolant coming out from the exhaust pipe of a car?

What is the difference between tire pressure display and tire pressure warning?

The difference between tire pressure display and tire pressure warning lies in their functions: The tire pressure display function visually shows the tire pressure on the car dashboard; The tire pressure warning is an alarm system that triggers alerts when the tire pressure is too high or too low. Methods to eliminate the tire pressure warning include: 1. After confirming normal tire pressure, inspect the tire pressure sensors and clear the fault code; 2. Locate the settings button on the central console for manual reset, then press the set button; 3. Check and ensure the tire pressure is normal, adjusting it to the standard pressure if necessary, at which point the system will automatically correct and reset.

5

3

Share

Reasons for Low Intake Pressure

Reasons for low intake pressure may include blockages in the refrigerant system's liquid supply pipe, expansion valve, or filter, insufficient refrigerant charge in the system, excessively long evaporator pipelines, etc. Blockages: Blockages in the refrigerant system's liquid supply pipe, expansion valve, or filter, or insufficient opening, malfunctioning float valve, low ammonia liquid circulation in the system, insufficient height difference or small pipe diameter in the intermediate cooler's liquid supply, can all lead to excessively low compressor suction pressure. Insufficient Refrigerant Charge: Insufficient refrigerant charge or liquid supply in the system, or improper adjustment of the throttle valve, can result in low compressor suction pressure. Excessively Long Evaporator Pipelines: If the evaporator pipelines are too long or if the design of the parallel suction header for multiple compressors is improper, it can also cause low compressor suction pressure. Excessive Oil Content in Freon System: Excessive oil content in Freon systems, which easily dissolves oil, can lower the suction pressure. Thick Frost or Oil Buildup in Evaporator: Thick frost or oil buildup on the inner walls of the warehouse evaporator increases thermal resistance, leading to reduced suction pressure.

6

5

Share

Does Scratching the Car Chassis Affect the Vehicle?

Scratching the car chassis can affect the vehicle's lifespan and also pose a threat to driving safety. Regular inspections are necessary. Generally, as long as the suspension system is not damaged to the point of deformation, there shouldn't be major issues. Common damages to the car chassis include: Undercarriage scraping and foreign object impacts: During road repairs, there are often large rocks or uneven surfaces. When driving on such roads, it's easy for large rocks or other protruding objects to come into close contact with the vehicle's chassis, commonly referred to as undercarriage scraping. Since undercarriage scraping is unpredictable, it can easily damage components located on the chassis, such as: cracking the catalytic converter shell, engine oil pan, or transmission housing, or deforming the suspension system. These issues can cause fatal damage to the vehicle. Corrosion: With the worsening environment, even rain has become acidic, increasing the likelihood of vehicle damage in such conditions. The chassis frequently comes into contact with sewage, grease, and other substances, whose chemical components can slowly corrode the chassis and its parts. Therefore, extra attention should be paid to chassis corrosion prevention. Besides the aforementioned risks from rainwater and oil sludge, snow-melting agents used in winter and seawater can also corrode the chassis, especially seawater.

4

2

Share

How Often Should a BMW Get Its First Maintenance?

BMW recommends the first maintenance after 1 year or 10,000 kilometers, whichever comes first. Taking the 2021 BMW 5 Series as an example, it belongs to the mid-to-large-sized car category with the following dimensions: length 5106mm, width 1868mm, height 1500mm, wheelbase 3105mm, fuel tank capacity 68 liters, and curb weight 1705kg. The 2021 BMW 5 Series features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine delivering a maximum horsepower of 184PS, maximum power of 135kW, and maximum torque of 290Nm, paired with an 8-speed automatic transmission.

14

1

Share

Can a Multifunction Steering Wheel Be Installed?

A multifunction steering wheel can be installed. The steering wheel is a wheel-shaped device used to control the direction of cars, ships, and airplanes. It mainly consists of a skeleton, foam, and the main driver's airbag. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque, which is then transmitted to the steering column. The working principle of a car steering wheel is to transmit torque to the rack-and-pinion mechanism, thereby pushing the wheels to turn left or right. Steering wheels are categorized into: single-spoke, dual-spoke, three-spoke, and four-spoke steering wheels. The method to adjust the height of the steering wheel is: 1. Locate the handle at the bottom of the steering wheel; 2. Press down the handle to adjust.

8

3

Share

How to Replace the Air Filter of Baojun 730?

The method to replace the air filter of Baojun 730 is as follows: 1. Open the hood. After parking and turning off the engine, pull the hood release lever inside the car firmly. Once the hood pops up, lift the hood latch by hand to open the hood. 2. Remove the screw covers. Insert a flat-head screwdriver into the edge of the cover and pry it upwards to remove it. There are four covers in total. 3. Remove the airbox fixing screws. Use a Phillips screwdriver to remove the four fixing screws. The screws are relatively long, so it may require some effort. 4. Unscrew the oil filler cap. The oil filler cap is not threaded and is secured by two clips. Turn it counterclockwise to the end and pull upwards firmly to remove it. 5. Take off the airbox upper cover. Lift the airbox upper cover by hand and pull it outward to release the clips from the slots, then remove the upper cover. 6. Replace the new air filter. After removing the airbox upper cover, you will see the air filter. Take it out and replace it with a new one. If the air filter is not dirty, you can blow off the dust with compressed air and continue using it. 7. Reinstall the airbox upper cover, tighten the screws, and put the decorative covers back on.

17

2

Share

Why is coolant coming out from the exhaust pipe of a car?

What is the difference between tire pressure display and tire pressure warning?

Reasons for Low Intake Pressure

Does Scratching the Car Chassis Affect the Vehicle?

How Often Should a BMW Get Its First Maintenance?

Can a Multifunction Steering Wheel Be Installed?

How to Replace the Air Filter of Baojun 730?

What Causes Car Leakage?

Is It Normal for a New Car's Steering Wheel to Slightly Lean to the Right?

Is it necessary to deal with scratches on car light covers?

Is it okay to drive at 75 in a 70 speed limit zone?