How to Solve Motor Hall Sensor Failure?

What Are the Key Points of Subject 2 Driving Test?

Driving license Subject 2 test key difficulties and points include: Reverse Parking: Widely regarded as the most challenging part of the Subject 2 test, its main difficulty lies in mastering the timing of steering wheel rotation. Hill Start and Parking: Rolling back or stalling during hill starts are common issues. If the vehicle shows signs of rolling backward when releasing the brake, immediately press both the brake and clutch firmly to stabilize the car, then restart using the same method. 90-degree Turn: There are multiple techniques for executing a 90-degree turn. The simplest method is to fully turn the steering wheel when the hood covers the opposite yellow line.

16

4

Share

Can vehicles be inspected on Sundays?

Vehicle inspections can be conducted on Sundays. According to Article 15 of the "Opinions on Strengthening and Improving Motor Vehicle Inspection Work": inspection institutions should implement an uninterrupted system on Saturdays, Sundays, and holidays, providing extended inspection services. Content of the annual inspection: Check whether the engine, chassis, body, and their auxiliary equipment are clean, complete, and effective; whether the paint surface is uniform and aesthetically pleasing; whether the main assemblies have been replaced and match the initial inspection records. Verify whether the vehicle's braking performance, steering control, lights, exhaust, and other safety features comply with the requirements of the "Technical Conditions for Safe Operation of Motor Vehicles." Check whether the vehicle has been modified, remodeled, or altered; whether the driving license, license plate, and all vehicle registration records match the actual condition of the vehicle; whether there have been any changes; and whether approval and modification procedures have been completed. Inspect whether the license plate, driving license, and enlarged license plate characters printed on the vehicle are damaged, altered, or illegible, and whether they need replacement. For large vehicles, check whether the unit name or the name of the street, township, or town where the vehicle is registered, along with the maximum seating capacity in the cab, is printed in Chinese imitation Song font on both sides of the door as required. For trucks, check whether the rear tailgate (including the trailer's rear tailgate) has the vehicle number enlarged 2-3 times as required; for individual or joint-ownership vehicles, check whether the word "individual" is printed on both sides of the door. The characters must be clear, and unit codes or other patterns are not allowed (special cases require approval from the vehicle management office).

9

3

Share

Is one turn of the steering wheel 180 degrees or 360 degrees?

One turn of the steering wheel is 360 degrees. When turning the steering wheel, without releasing both hands, it can be rotated 180 degrees to each side. This range of steering is sufficient for most situations. Steering wheel self-centering performance: All motor vehicles, regardless of the type of steering system or whether they have power assistance, should have self-centering capability. This is particularly important while driving, as it's difficult to return to the straight position when stationary, but there should still be some self-centering force. Self-centering principle: Both kingpin inclination and caster angle contribute to the vehicle's automatic self-centering and maintaining straight-line driving. The difference is that the self-centering effect of kingpin inclination is independent of vehicle speed, while the self-centering effect of caster angle is speed-dependent. Therefore, the caster angle's self-centering effect is more significant at high speeds, while the kingpin inclination's effect is more prominent at low speeds.

2

4

Share

How often should an 8-year-old car undergo annual inspection?

According to regulations, an 8-year-old car should be inspected every two years. Annual inspection time regulations: The Ministry of Public Security issued new regulations for vehicle annual inspections in 2021. For vehicles over 6 years but under 10 years old, the inspection cycle has been relaxed from once a year to once every two years. This means private cars only need to undergo two on-site inspections within 10 years, specifically in the 6th and 8th years. Definition of annual inspection: Vehicle annual inspection refers to a mandatory test for all vehicles that have obtained official license plates and registration certificates. It is equivalent to an annual physical examination for vehicles based on the technical requirements for motor vehicle operational safety. Vehicle annual inspections can promptly eliminate potential safety hazards, encourage better vehicle maintenance, and reduce the occurrence of traffic accidents.

14

5

Share

Will prolonged use of spark plugs increase fuel consumption?

Prolonged use of spark plugs can increase fuel consumption. If the spark plugs are damaged, it can directly lead to higher fuel consumption in the vehicle. Methods to determine if spark plugs are damaged: Remove the spark plugs and observe their condition based on the following appearance colors. Normal spark plugs have insulator skirts and electrodes that appear grayish-white, grayish-yellow, or light brown. A properly functioning spark plug has a reddish-brown insulator skirt, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plugs are covered in oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are severely damaged, with signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong heat range was selected or that the air-fuel mixture is too rich, or that engine oil is leaking into the combustion chamber. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, and remove the high-voltage wires. Mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the high-voltage wires according to the firing order, and then secure the cover.

17

2

Share

What Causes the Clutch Not to Return?

The reasons for the clutch not returning include: air entering the clutch pipeline system, and dirty clutch fluid with impurities. Air entering the clutch pipeline system: Air entering the system causes excessive clutch travel and poor return. This type of fault can be self-diagnosed. When the clutch pedal is pressed for the first time, if there is no resistance and the travel is excessive, and the pedal rises after repeated pressing, it is mostly due to air entering the hydraulic system. In this case, the cause of the air entry should be identified as soon as possible, and the air in the hydraulic system should be purged. Dirty clutch fluid with impurities: Impurities can cause severe internal wear of the clutch master cylinder or clog the return oil hole, preventing the clutch from returning. You can open the engine hood to check if the fluid in the clutch fluid reservoir appears black or gray. If discolored, the clutch fluid should be replaced promptly.

12

3

Share

How to Solve Motor Hall Sensor Failure?

What Are the Key Points of Subject 2 Driving Test?

Can vehicles be inspected on Sundays?

Is one turn of the steering wheel 180 degrees or 360 degrees?

How often should an 8-year-old car undergo annual inspection?

Will prolonged use of spark plugs increase fuel consumption?

What Causes the Clutch Not to Return?

What Should the Tire Pressure Be in Winter?

Which factory produces Wokaito tires?

What models are compatible with 90/90-12 tires?

How Long Should You Not Turn Off the Engine After a Jump Start?