What Sounds Are Normal for an Engine?

1 Answers
SanBrody
07/29/25 5:26pm
Engine idle sounds that are steady and without abnormal noises are normal. An engine is a machine that converts other forms of energy into mechanical energy. Below are the types of engines: 1. Internal combustion engine: Fuel burns inside the engine. 2. External combustion engine: Fuel burns outside the engine. 3. Gas turbine: Combustion produces high-pressure gas, which drives the turbine blades to rotate. 4. Jet engine: An engine that directly generates thrust through high-speed gas ejection from the nozzle. Below are the reasons why engine sounds may become louder: 1. Engine oil does not meet standards or is overfilled, increasing the stirring resistance of the crankshaft connecting rod. 2. Unsuitable oil viscosity. 3. Excessive engine carbon deposits, accelerating wear on cylinders and pistons. 4. Mixing different brands of engine oil. 5. Failing to change the engine oil on time.
Was this review help?
3
2
Share
More Forum Discussions

How to restore the one-touch window function of Besturn X80?

For the left front door, press the switch, hold the window lift button to raise the window until it is completely closed, then continue holding for five seconds before releasing to complete the one-touch window setting. Relevant information about the Besturn X80 is as follows: 1. Introduction 1: The 2015 Besturn X80, while retaining the advantages of rich configurations and excellent quality, introduced a new 1.8T powertrain model, equipped with the 4GC series high-performance turbocharged engine, and added a sports version based on the original models. 2. Introduction 2: The T powertrain of the 2015 Besturn X80 balances high power and fuel economy, meets the National V emission standards, has low failure rates over 250,000 kilometers, stable performance, and significantly enhances the driving experience. 3. Introduction 3: The 2015 Besturn X80 adopted a pioneering front and rear independent suspension system in its class. By using a higher-strength body and more advanced safety devices, it achieved a C-NCAP 5-star collision rating. In terms of the vehicle platform, the Besturn X80 shares the same platform with the Besturn B70, including the chassis and powertrain.
17
2
Share

How to Fix a Buick Excelle Trunk That Won't Open?

If the trunk lock of a Buick Excelle malfunctions, you need to check whether the lock block is damaged, whether the screws of the lock block and latch are loose, and whether the locking mechanism is faulty. Taking it to a repair shop for maintenance is recommended. Normally, pressing the trunk button on the remote key twice in succession can open the trunk. More details about Buick are as follows: 1. Introduction One: The Buick Excelle is a compact car launched by Buick. Compared to the previous generation, the body size of this car has not changed significantly, but some details of the exterior have been modified. 2. Introduction Two: In terms of appearance, the new Excelle has a more prominent sense of fashion, with very powerful body lines. The front face features a large-area grille, decorated with chrome trim. The headlights are connected to the grille, further highlighting the car's sporty character. 3. Introduction Three: From the side, the waistline design is very smooth, visually elongating the car's body length. The rear of the car adopts a brand-new design, with a full and rounded appearance. The taillights look relatively simple and feature a smoked treatment, providing high visibility when lit at night. 4. Introduction Four: Depending on the configuration, the car uses different tire sizes, including 195/65R15 and 205/55R16. Compared to other models in the same class, the tire size of this car is relatively smaller.
18
4
Share

How to Remove and Install the Manual Transmission Knob of Buick Excelle?

For the manual transmission knob of the Buick Excelle, simply hold the gear lever knob of the 2006 model old Buick Excelle and rotate it counterclockwise. Below is an introduction to the Buick Excelle: 1. Buick Excelle: The Buick Excelle (Buick-Excelle) is based on General Motors' global platform. The prototype of the Excelle is the latest global mid-size sedan developed by General Motors, designed and developed under the leadership of GM Daewoo Auto & Technology (GMDAT). 2. Exterior: The all-new Excelle adopts Buick's new-generation family design language, featuring the brand's signature winged grille with dark mesh textures and a high-gloss chrome shield-shaped outline, exuding youthful vitality. The winged headlights and grille form a diving angle, creating a dynamic appearance. The side of the car combines flowing body lines with high-gloss surfaces, presenting a low-front, high-rear diving posture. The winged taillights echo the headlights, while the rear spoiler reduces wind resistance and enhances handling, improving fuel efficiency. 3. Interior: The new car continues Buick's 360-degree wraparound integrated design, with lightweight design elements throughout. The center console features a high-contrast visual effect with integrated high-gloss black and chrome trim, highlighting a sense of technology. The seats are upholstered in rare suede fabric for the segment, providing a comfortable riding experience.
12
0
Share

Is it necessary to clean debris after the break-in period of a new car?

New car engine iron debris needs to be cleaned, for the following specific reasons: 1. Affects vehicle performance: If the iron debris generated during the break-in period is not promptly removed, it can damage the piston rings, leading to reduced sealing performance in the future, ultimately resulting in power loss and affecting vehicle performance. 2. Causes mechanical damage: Iron debris circulating with the engine oil over time can wear down various connecting parts inside the engine. The engine operates at high speeds, with tight clearances between the piston and cylinder walls, connecting rod bearings and crankshaft, etc. If these parts are frequently rubbed by iron debris, the heat generated in a short time can be enough to melt the metal, causing mechanical damage or even seizure.
2
2
Share

How to Remember the Accelerator and Brake for Beginners in Automatic Transmission Cars?

Braking techniques for automatic transmission cars are as follows: 1. How to brake in an automatic transmission car: The brake pedal is operated by the right foot, never confuse it with the accelerator. Apply the brake quickly at first, then gradually and gently with additional light taps. 2. Braking tips for beginners: Maintain a sufficient distance from the vehicle ahead. When you notice the vehicle in front starting to brake (its brake lights illuminate), promptly place your foot on the brake pedal and begin braking with even pressure, decelerating smoothly to match the speed of the vehicle ahead while monitoring its speed changes. If the vehicle ahead continues to brake, follow suit; if it stops braking and starts accelerating, release the brake pedal and resume normal driving. 3. Emergency braking in sudden situations requires being 'firm': In emergencies, swiftly press the brake pedal all the way down until the danger is averted. Many might think this action is simple. However, it must be performed quickly and with sufficient force—apply full strength to the brake. 4. Stay focused in complex road conditions: Driving on roads involves complex and ever-changing situations. Therefore, regardless of the braking method used, it is essential to accurately judge the braking distance. This requires drivers to not only fully understand their vehicle's braking performance but also maintain a high level of safety awareness, keep appropriate speed and distance, and remain highly attentive at all times.
10
5
Share

Will using high beams be captured by traffic cameras?

Using high beams will not be captured by cameras, but traffic police officers can issue penalties during on-site enforcement, which involve fines without demerit points. According to relevant laws and regulations, certain urban intersections are equipped with devices to capture traffic violations involving improper use of high beams. Additional information: As stipulated in Article 58 of the "Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China": 1. When motor vehicles are driven at night on roads without streetlights, under poor lighting conditions, or in low-visibility situations such as fog, rain, snow, dust, or hail, they must turn on headlights, clearance lights, and rear position lights. However, high beams must not be used when following another vehicle closely in the same direction. 2. Motor vehicles driving in foggy conditions must turn on fog lights and hazard warning flashers. When passing through sharp curves, slopes, arched bridges, pedestrian crossings, or uncontrolled intersections at night, motor vehicles should alternately switch between high and low beams as a signal. 3. When approaching sections with limited visibility such as sharp curves or the top of slopes, or when overtaking or encountering emergencies, motor vehicles should reduce speed, proceed with caution, and sound the horn as a warning. In case of a breakdown or accident that obstructs traffic and is difficult to move, motor vehicles must activate hazard warning flashers and place warning signs 50 to 100 meters behind the vehicle. At night, clearance lights and rear position lights must also be turned on.
18
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.