Reasons for Abnormal Noise in the Coolant Reservoir?

1 Answers
DiZane
07/29/25 5:04pm
The vehicle's cooling system has malfunctioned. Below is an introduction to the vehicle's cooling system: 1. Introduction: The main function of the cooling system is to dissipate heat into the air to prevent engine overheating, but the cooling system also has other important roles. The engine in a car operates best at an appropriately high temperature. If the engine becomes too cold, it accelerates component wear, reducing engine efficiency and increasing pollutant emissions. Therefore, another key role of the cooling system is to quickly warm up the engine and maintain it at a constant temperature. 2. Common Issues: Engine Overheating: Air Bubbles: Air in the coolant can create many bubbles when agitated by the water pump, which can hinder heat dissipation from the water jacket walls. Scale: Calcium and magnesium ions in water can gradually form scale at certain high temperatures, significantly reducing heat dissipation capacity and partially blocking water passages and pipes, preventing normal coolant flow. Hazards: Engine components expand due to heat, disrupting normal clearance fits, affecting cylinder air intake, reducing power, and diminishing the lubricating effect of engine oil. Corrosion and Leakage: Ethylene glycol has strong corrosive properties on the radiator. As the corrosion inhibitors in the coolant degrade, they can corrode components such as the radiator, water jacket, water pump, and pipes.
Was this review help?
11
0
Share
More Forum Discussions

Can 95 and 98 gasoline be mixed?

92 gasoline and 95 gasoline cannot be mixed because they have different isooctane contents. 92 gasoline is suitable for engines with low compression ratios, while 95 gasoline is suitable for engines with high compression ratios. If 92 gasoline is added to a car that requires 95 gasoline, it may cause abnormal combustion, leading to knocking. Knocking not only damages the combustion chamber but also directly affects the normal operation of the engine, and in severe cases, it may cause engine damage. If 95 gasoline is added to a car that requires 92 gasoline, although it won’t damage the engine, 95 gasoline is more expensive than 92 gasoline, resulting in unnecessary costs. Differences between 92, 95, and 98 gasoline: Standard gasoline is composed of isooctane and n-heptane. Isooctane has good anti-knock properties, with an octane rating of 100, while n-heptane has poor anti-knock properties and is prone to knocking in gasoline engines, with an octane rating of 0. If the gasoline is labeled as 92, it means that the gasoline has the same anti-knock properties as standard gasoline containing 92% isooctane and 8% n-heptane. The same principle applies to 95 and 98 gasoline. How to handle adding the wrong gasoline: If gasoline with a higher octane rating than required is added (e.g., adding 95 gasoline when 92 is specified), simply consume it normally and then refill with 92 gasoline. If gasoline with a lower octane rating than required is added (e.g., adding 92 gasoline when 95 is specified), you can add a high anti-knock fuel additive. Alternatively, you can drain the fuel tank and refill with 95 gasoline. To determine the correct gasoline for your car, refer to the vehicle’s user manual or check the fuel grade marked on the fuel tank cap.
9
5
Share

How Long Can a Tire Last After Patch Repair?

After patch repair, a tire can continue to be used for two to three years. The specific types of tire repairs are introduced as follows: Mushroom Plug Repair: This method offers excellent repair results and is more durable, but the cost is relatively higher, and it takes longer. It is mainly suitable for larger punctures. Hot Patch Repair: The repair is very durable, but it requires precise control of heating temperature and time, which may damage the tire structure. The cost varies significantly depending on the tire size. Rubber Strip Repair: This method does not require tire disassembly or rebalancing, making it quick and convenient, with a relatively low cost. However, it requires enlarging the puncture, which may lead to air leakage over time. It is mainly suitable for small, clearly located punctures.
16
2
Share

Can a Warped Wheel Hub Be Used on the Rear Wheel?

It is recommended to replace a warped wheel hub, as using it on the rear wheel still poses certain safety risks. Additional Information: Subtle Cases: Warping of a wheel hub is often difficult to detect with the naked eye and requires professional inspection at a 4S shop using specialized equipment. However, even with a warped hub, the car may exhibit certain symptoms, such as varying degrees of vibration in the body and steering wheel, veering off course during movement, and increased fuel consumption. Obvious Cases: If the warping is visible to the naked eye, the tire's warping rate is already moderate or higher, significantly affecting the car's handling and stability. No wheel hub is perfectly round; as long as the dynamic balance value does not exceed 60, it can generally be restored to 0. However, repaired wheel hubs carry certain safety risks.
17
2
Share

Can Points Be Deducted from a Driver's License Without the License Holder Present?

It is necessary for the license holder to be present in person. The license holder must sign in person and be present on-site, and must also present their ID card. Additional information: Procedure: Whoever's driver's license is used to deduct points must be the one to appear in person, bringing their own driver's license, ID card, and vehicle registration certificate. There is no such thing as authorization in this case. This is different from other vehicle-related matters where authorization may be possible; in this case, it is not allowed. Even if authorization is granted, it must be notarized with the license holder present, as this involves issues such as mandatory re-education if too many points are deducted. The "Road Traffic Safety Law" has introduced new regulations: vehicle owners will no longer be able to use someone else's driver's license to deduct points. If the system detects that multiple licenses are being used to deduct points for one vehicle, it will automatically trigger an alert. Additionally, the regulation states that whoever is caught in the violation must be the one to handle it, and a second-generation ID card must be swiped.
2
4
Share

What Causes the Clicking Sound After Parking?

The cooling sounds from the catalytic converter, exhaust pipe, and turbocharger. Here are the detailed explanations: Cooling sound from the catalytic converter: The normal operating temperature of the catalytic converter ranges between 400-800 degrees Celsius. After turning off the engine, its operation gradually stops, and the temperature decreases, causing the internal metal components to expand and contract, resulting in the clicking sound. Cooling sound from the exhaust pipe: During cold idling, the exhaust pipe can reach temperatures above 200 degrees Celsius. Under high load or when unburned fuel mixture ignites in the exhaust pipe, the temperature can rise even higher. Thus, the exhaust pipe also expands and contracts, producing the clicking sound, often originating from the front end or flexible joint of the exhaust pipe. Turbocharger cooling sound: Under normal conditions, exhaust gases can reach temperatures of 600-700 degrees Celsius, accelerating the turbocharger's rapid rotation and friction-generated heat. After shutdown, the heat expansion and contraction become very noticeable, leading to the clicking sound.
16
3
Share

How many months in advance can a vehicle undergo its annual inspection?

Motor vehicles can undergo annual inspection 3 months in advance. According to Article 40 of Order No. 102 from the Ministry of Public Security of the People's Republic of China: The owner of a motor vehicle may apply for an inspection compliance mark at the vehicle management office of the registration location within three months before the expiration of the motor vehicle's inspection validity period. Documents required for vehicle annual inspection: Original copy of the compulsory traffic accident liability insurance certificate (duplicate); Safety technical inspection compliance certificate (provided by the vehicle inspection station); Original motor vehicle driving license; Proof of payment of vehicle and vessel usage tax; Original ID card of the vehicle owner (and the ID card of the agent if applicable). Annual inspection procedure: First, after submitting the inspection application, the vehicle undergoes an online inspection. The vehicle is driven into the automatic inspection area to sequentially check whether the exhaust emissions, speed, lights, side slip, and chassis meet the standards. Only when all items pass can the inspection proceed. Next is the appearance inspection, verifying the accuracy of the vehicle's license plate, type, body color, engine number, VIN code, and frame number. Then, the body appearance is inspected, including details such as the bumper, engine compartment, rearview mirrors, lower mirrors, window glass, paint surface, engine operation status, and the interior and wheels of passenger vehicles. Finally, the owner can obtain the inspection report and application form from the inspector. If all inspection items pass, the owner can proceed to pay the inspection fee and collect the driving license and compliance label; if any items fail, the owner must make repairs and undergo re-inspection until all items pass before proceeding with the visa procedures.
1
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.