What Causes Abnormal Noise Due to Excessive Clearance in the Brake Caliper?

What is the reason for the engine cutting out while driving and then resuming after pressing the accelerator again?

The reason for the engine cutting out while driving and then resuming after pressing the accelerator again: It could be due to a malfunction in the throttle pedal position sensor or throttle position sensor. Issues with the idle control valve or engine control unit (ECU) can also cause this phenomenon. It is recommended to contact a 4S dealership for inspection and repair. Basic working principle of engine fuel cut-off protection: For small and medium-sized diesel engines, the fuel cut-off protection usually involves installing a small cylinder on the throttle linkage. The piston of this small cylinder is connected to the throttle linkage. Under normal circumstances, the small piston rod does not interfere with the throttle linkage's adjustment of the throttle. When the diesel engine experiences a loss of lubricating oil pressure, the pressure detection device installed in the lubricating oil pipeline will open the compressed air switch, allowing compressed air to reach the small cylinder through the pipeline, pushing the piston to move. This causes the throttle linkage to move to the extreme position in the fuel cut-off direction, completely cutting off the fuel supply, resulting in the engine stopping due to fuel cut-off.

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What engine is used in the JAC Jiayue A5?

JAC Jiayue A5 is equipped with a 1.5-liter turbocharged four-cylinder engine across the entire lineup, with the model number HFC4GB2.4E. This engine delivers a maximum power of 110 kW and a maximum torque of 210 N·m. It features VVT technology and multi-point electronic fuel injection, and utilizes an aluminum alloy cylinder head and block. The engine in the JAC Jiayue A5 is domestically produced, developed and manufactured by JAC Motors. For daily maintenance of the JAC Jiayue A5 engine, the following methods can be employed: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD to SF grade gasoline engine oil based on the additional devices in the intake and exhaust systems and usage conditions. For diesel engines, choose CB to CD grade diesel engine oil according to mechanical load, ensuring the standard meets or exceeds the manufacturer's requirements. Regularly change the engine oil and filter. The quality of any lubricating oil will degrade over time. After a certain mileage, its performance deteriorates, leading to various engine issues. To prevent malfunctions, change the oil periodically based on usage conditions and maintain an appropriate oil level. As oil passes through the fine pores of the filter, solid particles and viscous substances accumulate in the filter. If the filter becomes clogged and oil cannot pass through, it may rupture the filter or open the safety valve, allowing oil to bypass through the relief valve and carry contaminants back to the lubrication points, accelerating engine wear and increasing internal contamination. Periodically clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls. These mix with metal particles from component wear to form sludge. In small amounts, the sludge remains suspended in the oil, but in larger quantities, it precipitates, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to flush the radiator. Removing rust and scale deposits not only ensures the engine operates smoothly but also extends the overall lifespan of the radiator and engine.

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What is the date for tire code 4621?

Tire code 4621 indicates the production date of the tire. The first two digits represent the week number, and the last two digits represent the year, meaning it was produced in the 46th week of 2021. Every tire has a production date. If a consumer encounters a new tire without a production date when purchasing, it is likely that the seller has ground off the numbers to conceal the production date. Tires without production dates are not recommended for purchase. Always check the production date when buying tires. How to check the production date of a tire: On the sidewall of the tire, immediately following the DOT letters, there is an 11-digit alphanumeric code representing the tire's identification or serial number. The last four digits of this serial number indicate the production date. On the outer side of the tire, there is a four-digit number in an oval shape, such as 5106. The first two digits represent the month of production, and the last two digits represent the year. On the outer side of the tire, there is a set of numbers. The last four digits of this marking provide information about the production date. It consists of four digits in the format AABB, where the first two digits (AA) indicate the week of the year, and the last two digits (BB) indicate the year.

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What Are the Reasons for Abnormal Noises When Braking Too Hard?

There are several reasons for abnormal noises when braking too hard, including the brake being in the break-in period, normal activation of the ABS system, metal hard spots on the brake pads, and severe wear of the brake disc. Brake in the break-in period: New cars or recently replaced brake discs and pads will have a break-in period, during which some abnormal noises are unavoidable. The noise will disappear after using the brakes a few times. Normal activation of the ABS system: During emergency braking, the brake pedal may produce continuous abnormal noises, sometimes accompanied by a kicking sensation, indicating that the ABS system is activated, which is a normal sound. Metal hard spots on the brake pads: There may be some tiny metal particles inside the brake pads, which can produce sharp, piercing sounds when lightly braking. Solutions include forcefully applying the brakes several times, removing and re-grinding the brake pads, or replacing them with higher-quality ones. Severe wear of the brake disc: Severe wear on the brake disc can form deep grooves around its circumference, causing friction between the brake pads and the edges of the grooves, resulting in abnormal noises. The solution is to promptly inspect the brake disc and replace it if the wear is severe.

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Which month does the 46th week of tire production correspond to?

Tire production in the 46th week corresponds to November. Since a month consists of 4 weeks, dividing 46 by 4 gives approximately 11.5, which means mid-November. The production date of a tire is marked on the outer side of the tire. You don't need to flip the tire; it's visible on the outer side. On one side of the tire wall, there is a set of numbers. The last four digits of this marking provide information about the production date. It consists of four digits "aabb," where the first two digits "aa" indicate the week of the year, and the last two digits "bb" indicate the year. In addition to the production date, tires also display many other pieces of information. According to international standards, the tire code consists of six parts, including tire width, tire section height and aspect ratio percentage, tire type code, rim diameter (in inches), load index (permissible load capacity code), and permissible speed code. There are two methods for identifying the specifications of car tires. One is tires marked with specifications like "5.60-13," indicating a tire width of 5.60 inches and a rim diameter of 13 inches. The other is tires marked with specifications like "195/60R14," indicating a tire width of 195mm, an aspect ratio (the ratio of the tire's radial section height to width) of 60, and a rim diameter of 14 inches. The letter "R" stands for radial tire. Additionally, radial tires may also be denoted by the letter "Z."

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What Should Drivers Pay Attention to When Driving in the Rain?

When driving in the rain, drivers should maintain good visibility, prevent tire skidding, drive slowly, learn techniques for driving through water, and pay attention to pedestrians. Maintaining good visibility: Besides driving cautiously, drivers should promptly turn on the windshield wipers and use lights, air conditioning defogging, and other functions appropriately. Lights not only provide illumination but also signal the vehicle's position to others. Visibility is low in rainy conditions, so turning on lights in time can significantly reduce the likelihood of accidents. However, avoid using high beams during heavy rain as the reflection can impair the driver's vision. Preventing tire skidding: Rain makes the road surface slippery, increasing the risk of tire skidding. Therefore, avoid sudden braking when turning. It's best to slow down in a straight line before entering a curve. Driving slowly: Regardless of road width or condition, drivers should reduce speed in the rain, constantly monitor the distance between their vehicle and others, and be mentally prepared to take emergency measures. Low visibility and poor road conditions in the rain also reduce the effectiveness of braking and other emergency responses, so slowing down in advance allows sufficient time and space to handle situations safely. Learning techniques for driving through water: Exercise caution when driving on roads with standing water. Maintain a low speed and drive straight without stopping unnecessarily. If the water level exceeds the exhaust pipe, find an alternative route. Observing pedestrians: Pedestrians holding umbrellas and cyclists wearing raincoats have limited visibility, hearing, and reaction time. Drivers should slow down, yield patiently, and stop at a safe spot if necessary. Avoid rushing or competing with pedestrians and cyclists.

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What Causes Abnormal Noise Due to Excessive Clearance in the Brake Caliper?

What is the reason for the engine cutting out while driving and then resuming after pressing the accelerator again?

What engine is used in the JAC Jiayue A5?

What is the date for tire code 4621?

What Are the Reasons for Abnormal Noises When Braking Too Hard?

Which month does the 46th week of tire production correspond to?

What Should Drivers Pay Attention to When Driving in the Rain?

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