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How to Solve Abnormal Noises in Car Engine?

1 Answers
DamianFitz
07/30/25 10:55am
Car engine abnormal noises may be caused by the following reasons and solutions: 1. Reason: Engine mount aging or loosening. The engine mount, which connects the car body and the engine, plays a role in fixing the engine. Once the mount ages or loosens, the engine will produce abnormal noises. Solution: Replace the mount. 2. Reason: Piston slap. If the car makes a clanking noise, it indicates poor lubrication conditions, and the piston collides with the cylinder wall during engine operation. Solution: Replace the engine oil. 3. Reason: Dirty throttle or excessive carbon deposits in the fuel injector. Solution: Remove engine carbon deposits, clean the throttle, and replace the oil pad and spark plugs.
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What is the braking principle of a car?

The basic principle of a car's braking system is that when the driver presses the brake pedal, pressure is applied to the brake fluid in the master cylinder. The fluid then transmits this pressure through the pipelines to the pistons in the brake calipers at each wheel. The pistons drive the brake calipers to clamp the brake discs, generating significant friction to slow down the vehicle. The following are the functions of the braking system: 1. Service Brake: During driving, the service brake (foot brake) is commonly used to decelerate the car or bring it to a stop within the shortest distance possible; it also helps maintain a stable speed when driving downhill. 2. Parking Brake: The parking brake not only keeps the car stationary but can also be used in case the service brake fails. Once the car is parked, the parking brake (hand brake) should be applied to prevent the vehicle from sliding forward or rolling backward.
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Why Are Used Roewe 350 Cars So Cheap?

Roewe 350 has no competitive advantage compared to mainstream competitors such as the Civic and Corolla, so it can only boost sales through significant price reductions, which results in lower prices in the used car market. Below are specific details about the Roewe 350: 1. Exterior: The Roewe 350 is approximately 4.5m in length, with a wheelbase of 2650mm, making it larger than most competitors in its class. Its design is much simpler than the Roewe 550, without excessive styling or sporty elements, presenting itself as a visually appealing family sedan. 2. Performance: As a compact family sedan focused on tech features, the Roewe 350 is equipped with the third-generation inkaNet3G intelligent driving system, which includes iVoka voice cloud driving and iRoad real-time dynamic navigation.
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What are the reasons for the fuel pump not receiving power when turning the ignition key?

Introduction to the reasons for the fuel pump not receiving power when turning the ignition key: 1. Check if the car battery is dead: If it's dead, this situation will occur, and the battery needs to be recharged. 2. Check if the fuel relay is loose: It's best to have a mechanic check if fuel can be supplied during ignition. If fuel comes out, there's no problem. 3. Check if the car's fuel line is clear: Please send it to a repair shop for maintenance. 4. Check if the car's distributor is old and needs maintenance: If it's old, remove it for maintenance, re-lubricate, and reinstall it. 5. Check if the damper line is aged or broken: If so, please replace it with a new damper line.
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How Long Does It Take for Fuel Consumption to Return to Normal After Carbon Deposit Cleaning?

After cleaning the throttle valve carbon deposits, as long as it is properly matched, the fuel consumption will generally return to normal after driving about 100 kilometers. Below is the relevant introduction: 1. Introduction: The throttle valve is a controllable valve that regulates the air entering the engine. After the air enters the intake pipe, it mixes with gasoline to form a combustible mixture, which then burns to generate power. 2. Impact of the Throttle Valve: The throttle valve is one of the most important components in today's electronic fuel injection engine systems. Its upper part connects to the air filter, and the lower part connects to the engine block, acting as the throat of the car engine. The responsiveness of the car's acceleration is closely related to the cleanliness of the throttle valve. Cleaning the throttle valve can reduce fuel consumption and make the engine more agile and powerful.
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What Causes Deep Scratches on Brake Discs?

Deep scratches on brake discs are caused by friction between the brake pads and the discs. If the scratches are evenly distributed and relatively shallow, this is considered normal. Brake discs, also known as rotors, are metal discs fixed to the wheels and rotate with them, typically made of alloy steel. Below are the functions of the braking system: 1. Service Braking: During driving, the service brake (foot brake) is commonly used to slow down the vehicle or bring it to a stop within the shortest distance possible; it also helps maintain stable speed when driving downhill. 2. Parking Brake: The parking brake not only keeps the vehicle stationary but can also be used if the service brake fails. Once the vehicle is parked, the parking brake (handbrake) should be engaged to prevent the vehicle from rolling forward or backward.
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What are the energy sources for new energy vehicles?

New energy vehicles primarily use energy sources including fuel cells, hybrid power, hydrogen energy, natural gas, solar energy, etc. New energy vehicles refer to all vehicles that use energy sources other than gasoline and diesel engines, including pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. The following are the benefits of new energy vehicles: 1. Fuel energy conservation: New energy vehicles generally use natural gas, petroleum gas, hydrogen, or electricity as power sources, conserving fuel energy. 2. Reduced exhaust emissions: New energy vehicles produce no exhaust emissions, effectively protecting the environment. Electric vehicles do not produce tailpipe emissions and are pollution-free. Hydrogen-powered vehicles emit only water, causing no environmental pollution. Because they are essentially zero-emission, they are also exempt from traffic restrictions based on license plate numbers. 3. High efficiency: New energy vehicles generally adopt new technologies and structures, making them more efficient.
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