What Causes a Car Engine to Make Loud Noises?

2 Answers
StLandon
08/31/25 7:49am
Engine loud noises may be caused by engine oil, belts, water temperature, etc. The specific analysis is as follows: Engine Oil: If the vehicle's engine oil viscosity is too high, it can easily cause operational issues in the engine, reduce lubrication effectiveness, and lead to loud engine noises. Promptly visit a repair shop to check if the engine oil needs replacement. Belts: Check if the belts are loose. Loose belts can cause increased noise in the engine compartment. Water Temperature: If the engine noise is loud, it might be due to high water temperature. Check if the temperature gauge is normal and if there is any smoke in the engine compartment. Be sure to replace the coolant before winter.
Was this review help?
20
3
Share
GabrielaLee
09/13/25 4:08am
As a seasoned driver with years of experience, I find that loud engine noises are quite common. Sometimes it's due to insufficient or degraded engine oil, which leads to inadequate lubrication and increased friction, causing a humming sound. When the belt is loose or has aging cracks, it produces a sharp whistling noise. If there are cracks in the exhaust system or loose connections, you might hear a banging sound. Another possibility is aging or loose engine mount bushings, which can increase overall vibration noise while driving. I've encountered this a few times myself. First, I stop to check the oil dipstick—if the oil level is below the mark, I top it up with fresh oil. Then, I inspect the belt for signs of wear. If the problem persists, don't delay—engine damage isn't just about noise; it could also lead to safety hazards. Always consult a professional mechanic for a thorough check. Remember, regular oil changes and belt inspections are key to prevention.
Was this review help?
18
2
Share
Expand All
More Forum Discussions

How to reset the maintenance wrench on the Bestune X40?

The method to reset the maintenance wrench on the Bestune X40 is: 1. Press the power switch for about 3 seconds to activate the vehicle's power supply; 2. Press the trip button to switch the dashboard to the trip interface; 3. Press the set button on the right side of the multifunction steering wheel; 4. Use the left and right toggle buttons on the steering wheel to switch the menu to the reset maintenance trip interface; 5. Press the off button on the right side of the multifunction steering wheel again. Taking the 2019 Bestune X40 as an example, its body dimensions are: length 4310mm, width 1780mm, height 1680mm, with a wheelbase of 2600mm. The 2019 Bestune X40 is equipped with a 1.6L naturally aspirated engine, with a maximum horsepower of 114ps, maximum power of 84kw, and maximum torque of 115nm.
5
0
Share

What to Do When the Car Radiator Temperature is Too Low in Winter?

Solutions for low car radiator temperature in winter include: 1. Check the thermostat for faults and replace it if necessary; 2. Inspect the electronic fan, water temperature gauge, engine water pump, and water temperature sensor for any malfunctions; 3. Visit a 4S shop to check if the engine's cooling system components are functioning properly. Reasons for low car radiator temperature in winter are: 1. Faulty water temperature sensor; 2. Damaged thermostat; 3. Malfunction in the engine cooling system. The hazards of low car water temperature in winter include: 1. Incomplete fuel combustion, reducing engine efficiency; 2. Incomplete fuel combustion leading to carbon deposits, increasing fuel consumption and polluting the environment; 3. Prolonged operation of the car in low-temperature environments accelerates wear and tear of internal engine components.
19
1
Share

What are the causes of insufficient heating in the Classic Sylphy?

The causes of insufficient heating in the Classic Sylphy are: 1. Lack of antifreeze; 2. Damaged thermostat; 3. Engine cooling system malfunction. Taking the 2021 Classic Sylphy as an example, it is a compact car with body dimensions of 4631mm in length, 1760mm in width, 1503mm in height, a wheelbase of 2700mm, a fuel tank capacity of 50 liters, and a curb weight of 1188kg. The 2021 Classic Sylphy features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 122PS, a maximum torque of 155Nm, and a maximum power of 90kW, paired with a 5-speed manual transmission.
12
0
Share

What is the letter symbol for the car's snow mode?

The letter symbol for the car's snow mode is 'snow'. Snow mode specifically refers to the low-gear control mode selection of the car's automatic transmission. The automatic transmission electronic control system will control the current gear of the automatic transmission based on main signals such as current vehicle speed, engine speed, accelerator pedal position, and other signals. The driving modes of a car are divided into: 1. Normal mode: Ensures unchanged power while achieving better fuel economy; 2. Sport mode: After activating sport mode, the electronic control unit increases the engine speed to maintain sufficient torque for quick acceleration and deceleration; 3. Economy mode: The vehicle operates in economy mode, where the vehicle's computer controls the fuel injection volume and the transmission control module adjusts the shifting logic to maintain fuel-efficient driving.
17
2
Share

What to Do When the Clutch Cable Breaks?

The solutions for a broken clutch cable are: 1. Engage the first gear and start the engine directly; 2. Start the engine in neutral, push the car to gain momentum, steer properly, and then shift into gear to move forward. The functions of the clutch are: 1. Gradually increase the driving force to ensure a smooth start; 2. Temporarily separate the engine from the transmission for gear shifting; 3. Prevent overload of the transmission system; 4. Reduce torsional vibration impact from the engine and extend the lifespan of transmission gears. The maintenance and servicing items for the clutch include: 1. Checking the fluid level in the clutch reservoir; 2. Inspecting the hydraulic control mechanism of the clutch for leaks; 3. Depressing the clutch pedal to check its responsiveness; 4. Checking the height of the clutch pedal; 5. Inspecting the clutch release point; 6. Evaluating the clutch's working condition; 7. Bleeding air from the clutch hydraulic system.
19
2
Share

What is the correct parking method for a 7-speed dual-clutch transmission?

The correct parking method for a 7-speed dual-clutch transmission is: 1. When parking the car, slowly press the brake until the car comes to a complete stop; 2. Engage the handbrake and shift the gear to P (Park); 3. Release the brake pedal and turn off the vehicle. A dual-clutch transmission has two clutches, one controlling gears 1, 3, and 5, and the other controlling gears 2, 4, and 6. When using 1st gear, 2nd gear is already prepared, significantly reducing shift time. The starting method for a 7-speed dual-clutch transmission is: 1. Without pressing the foot brake, press the start button twice to initiate the car's computer system self-check, for at least 6 seconds; 2. Press the foot brake and press the start/stop button to ignite; 3. Release the foot brake and warm up the car in place; 4. Press the foot brake, release the handbrake, and shift the gear from P to D; 5. Slowly release the foot brake to start moving; 6. Depending on road conditions, smoothly press the accelerator to speed up.
16
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.