Is there a warning icon for low windshield washer fluid?

What is the latest admission time for the Dingtao Subject 4 examination?

To inquire about the latest admission time for the Dingtao Subject 4 examination, you may contact the Traffic Police Brigade. The explanation provided by the Traffic Police Brigade is as follows. Below is relevant information about Subject 4: Introduction: Subject 4, also known as the Subject 4 theory test or driver theory test, is part of the motor vehicle driver's license assessment. After the implementation of the "Order No. 139 of the Ministry of Public Security of the People's Republic of China," the Subject 3 examination was divided into two parts. In addition to the road test, a safety and civilization knowledge test was added, commonly referred to as "Subject 4," which assesses "driving ethics." Since this test is conducted after Subject 3, it is commonly called the Subject 4 examination. Officially, there is no designation as Subject 4. Examination Content: The test paper consists of 50 questions, primarily in the form of case studies, images, animations, etc. The total score is 100, with a passing score of 90.

15

5

Share

What to Do When the Car Doesn't Supply Fuel During Ignition?

The solution to the car not supplying fuel during ignition is as follows: If the car's fuel pump is malfunctioning, it is necessary to promptly visit the car's 4S store or a repair shop to inspect or replace the fuel pump, which can resolve the issue of the car not supplying fuel during ignition. Below is relevant information about the car fuel pump: 1. Introduction: The fuel pump is a lightweight and compact pump, mainly categorized into in-line, distributor, and unit types. The fuel pump requires a power source to operate, and its lower camshaft is driven by the engine crankshaft gear. 2. Classification: (1) Injection type: The injection pump is primarily used in automotive diesel engines. The injection pump assembly is usually composed of the injection pump, governor, and other components installed together as a whole. (2) Self-priming type: Before starting the self-priming pump, fill the pump casing with water or ensure the pump casing itself contains water. After starting, the high-speed rotation of the impeller causes the water in the impeller channels to flow towards the volute, opening the inlet check valve, allowing air from the suction pipe to enter the pump and reach the outer edge through the impeller channels.

1

4

Share

Should You Turn Off the Engine When Waiting at a Red Light?

It is recommended not to turn off the engine when waiting at a red light, as this practice does not save fuel. Since the waiting time is relatively short, the amount of fuel injected during restart is not significantly different from the fuel consumption during a short idle period. Additionally, frequent restarts can wear out the starter motor and shorten the battery's lifespan. Additional Information: 1. Consider the duration before turning off the engine: Before turning off the engine, always consider the duration of the stop. If the parking time exceeds 2 minutes, you can turn off the engine. If the parking time is short, there is no need to do so. The engine, as the heart of the car, will see a reduced lifespan with excessive shutdowns and restarts. Frequent ignition starts can also affect the lifespan of the spark plugs. 2. Consider the duration during traffic jams: The decision to turn off the engine during traffic jams depends on the expected duration. If the idle time is expected to be long (e.g., due to traffic control), it is advisable to turn off the engine. For short-term traffic jams (such as waiting at a red light), it is not recommended to turn off the engine.

20

0

Share

What procedures are required for the inspection of vehicle gas tanks?

Private vehicle gas cylinder annual inspections are conducted at the Special Equipment Inspection Institute under the Municipal Bureau of Quality and Technical Supervision. For the inspection, you need to bring the gas cylinder usage registration certificate from the oil-to-gas conversion, the gas cylinder factory qualification certificate, the gas cylinder installation supervision inspection certificate, the vehicle's driving license, and the owner's ID card to the Special Equipment Inspection Institute. Oil-to-gas conversion maintenance precautions: 1. Conduct a comprehensive gas leakage inspection every half month: Shake water mixed with dishwashing liquid thoroughly and apply it to the vehicle's switches, pressure reducing valves, and other joints. If bubbles are observed, it indicates a natural gas leakage issue, and the vehicle should be sent to a specialized auto repair department for inspection and repair. 2. Regularly maintain the air filter, fuel injection simulator, and pressure reducer: Improper cleaning of the air filter, incorrect adjustment of the fuel injection simulator's injection delay, or improper adjustment of the pressure reducer can cause the oil-to-gas converted vehicle to stall while driving. 3. The service life of a gas cylinder is generally 15 years: For safety reasons, relevant regulations stipulate that oil-to-gas converted vehicles must undergo an annual inspection of the gas cylinder every two years. If the gas cylinder shows wear or damage, it must be replaced before continued use.

10

2

Share

Does the Throttle Affect Fuel Consumption?

High fuel consumption in cars is not related to the throttle. The factors that affect a car's fuel consumption are as follows: 1. Transmission: The transmission is a power-speed adjustment device connected between the engine output and the wheel drive shaft. Its basic functions are: changing the corresponding "power-speed" combination according to the car's driving needs, altering the speed direction (reverse gear), and disconnecting the engine from the drive shaft (idle). 2. Vehicle Weight: The heavier the vehicle, the more power is required, naturally leading to higher fuel consumption. 3. Design Factors: This mainly refers to the drag coefficient. Vehicle design is not just about aesthetics but also considers the drag coefficient. The more streamlined and smoother the car design, and the smaller the body attachments, the more effectively the drag can be reduced. The lower the drag coefficient, the lower the vehicle's drag, the better the stability, and the more fuel-efficient it is. Generally, a 10% reduction in drag coefficient can lower fuel consumption by 3%. 4. Tires: Tires have a direct impact on a car's fuel consumption. The wider the tread and the larger the tread pattern, the greater the friction generated, leading to increased fuel consumption.

12

0

Share

What Causes Brake Noise in New Cars?

The reasons for brake noise in new cars are as follows: 1. Metal hard spots on brake pads: If there are tiny metal particles on the brake pads, they will produce a screeching sound when braking. You can try slamming the brakes a few times or grinding/replacing the brake pads. 2. Severely worn brake discs: After prolonged use, deep grooves may form on the brake discs at the friction points with the brake pads, causing noise during braking. If the grooves are shallow, grinding the edges of the brake pads may solve the issue. If the grooves are deep, replacing the brake discs is the only option.

10

3

Share

Is there a warning icon for low windshield washer fluid?

What is the latest admission time for the Dingtao Subject 4 examination?

What to Do When the Car Doesn't Supply Fuel During Ignition?

Should You Turn Off the Engine When Waiting at a Red Light?

What procedures are required for the inspection of vehicle gas tanks?

Does the Throttle Affect Fuel Consumption?

What Causes Brake Noise in New Cars?

Can a Spare Car Key Start the Vehicle?

What are the three essential insurances for a car?

What causes both the ABS and tire pressure lights to illuminate simultaneously?

Should I Report to the Police if My Car Gets Scratched in the Residential Area?