What are the reasons for the loud humming sound when accelerating?

1 Answers
PrestonLynn
07/28/25 2:45pm
The reasons for the loud humming sound when accelerating are: 1. The engine components are not fully lubricated by the oil; 2. If this phenomenon persists after some time, it may indicate severe wear of engine components, requiring internal engine cleaning to reduce wear gaps; 3. Large gaps and poor sealing can worsen the engine condition and may also lead to abnormal noises—it is recommended to have it checked at a repair shop; 4. It may be caused by excessive carbon buildup in the engine, which can be cleaned at a repair shop; 5. It could also be due to poor filtration, commonly caused by a dirty air filter—it can be cleaned or replaced at a repair shop; 6. The use of low-purity gasoline can also cause this phenomenon, as impure gasoline tends to form carbon deposits inside the engine.
Was this review help?
13
0
Share
More Forum Discussions

What is the battery model of the Baojun 730?

The Baojun 730 uses a Camel brand 86550T-12V-55Ah-550CCA battery. The car battery is installed in a suitable position and has special safety features. If the battery must be replaced, the electromagnetic compatibility, size, maintenance, output power, and safety requirements of the new battery should be considered before purchase. Below is an introduction to the battery: 1. Routine inspection: Check whether the battery is firmly installed, whether the battery cables are securely connected to the terminals, and whether the contact is good. Observe whether the battery casing is cracked. 2. Status inspection: Modern cars generally use maintenance-free batteries. Most of these maintenance-free batteries have a density indicator on the cover, commonly known as the "magic eye," which changes color according to the density of the electrolyte, displaying the battery's status through different colors. When the magic eye is green, it indicates that the battery has sufficient charge and is functioning normally. When the magic eye is black, it indicates that the battery is low on charge and needs to be recharged or replaced promptly. When the magic eye shows light yellow or no color, it indicates that the acid level in the battery is too low or there is an internal fault, requiring repair or replacement.
6
1
Share

How many body colors does the Volkswagen Bora have?

Volkswagen Bora offers 7 body colors, namely Starry Blue, Polar White, Seashell Gold, Rose Red, Manganese Black, Flash Silver, and Magic Gray. Below is a partial introduction to car colors: 1. Consumers have various psychological needs, requiring different colors to satisfy their preferences. 2. Different designs are paired with different colors. From an aesthetic perspective, the right color can better highlight the design of the car and showcase its characteristics. As part of the car's design, the color is directly influenced by the designer and the overall styling of the vehicle.
3
4
Share

What is the model number of the Emgrand GL fog light bulb?

The fog light model for the Emgrand GL is H7. Fog lights are a special type of lighting fixture. The fog light head is made of a special flash head, with a reflective glass in front of the flash tube, and all the light output is diffused light reflected by the reflector. They are used to illuminate the road during driving in rainy or foggy weather. Because visibility is low in foggy conditions, the driver's line of sight is limited. Here are some precautions for replacing fog lights: 1. Installation: Perform this when the engine is off and cool. Before replacing the fog light bulb, to avoid being burned by components in the engine compartment during replacement, ensure the vehicle is turned off and in a cool state, then open the hood. Wear gloves during replacement to protect your hands and facilitate operation. 2. Disconnect the power socket of the bulb. 3. After disconnecting the power socket, remove the waterproof cover behind the bulb. 4. Remove the bulb from the reflector. The bulb is usually fixed by a wire clip, and some models may have a plastic base. 5. Place the new bulb into the reflector, align it with the fixing position, and push the wire clips on both sides inward to secure the new bulb in the reflector. 6. Reattach the waterproof cover, plug in the bulb power socket, and the replacement operation is complete.
4
1
Share

What type of tires does the A4L use?

Audi A4L comes with original Michelin 245/40-R18 tires and 10-spoke 18-inch V-shaped aluminum alloy rims. The advantages of Michelin tires include comfort, soft tread, and good noise reduction. Below is relevant information about tires: 1. The main functions of tires are dry grip, hydroplaning resistance, providing comfort, reducing driving noise, impact resistance, wet grip, load capacity, handling performance, and average wear. 2. The cross-sectional structure of a tire can generally be divided into four parts: tread, shoulder, sidewall, and bead. Each part has its own function. The tread mainly contacts the ground, the shoulder and sidewall provide support, and the bead contacts the rim to create a seal.
7
4
Share

What is the minimum ground clearance of the Vision X6?

The minimum ground clearance of the Vision X6 in an unloaded state is 30CM on both sides of the vehicle. The smallest ground clearance is at the factory-installed plastic guard under the engine, measuring 17.7CM. Below is some related information about the Vision X6: 1. The Vision X6 is the same as the Vision SUV, just different names for the same model. Vision SUV is the final name given at launch, while names like Vision X6 and Vision GX7 were temporary. 2. There are three powertrain options: a 1.4T inline 4-cylinder turbocharged engine, with the high-power version paired with either a 6-speed manual or CVT transmission, delivering a maximum power of 104KW and maximum torque of 235N·m; the low-power version is paired with a CVT transmission, producing a maximum power of 98KW and maximum torque of 215N·m. There is also a 1.8L inline 4-cylinder naturally aspirated engine, matched with a 5-speed manual transmission, offering a maximum power of 98KW and maximum torque of 170N·m.
8
2
Share

What to Do If the Fuel Tank Cap of Golf 7 Won't Open?

Here are the solutions if the fuel tank cap of Golf 7 won't open: 1. If the fuel tank cap won't open, you can start from the trunk. First, remove the trunk liner covering the fuel tank, which is usually secured by some plastic clips and can be easily pried open with a screwdriver. 2. After removing the liner, you can see the locking mechanism of the fuel tank cap and the cable used for remote operation. Simply pull the cable to open the fuel tank cap. If this doesn't work, press the movable part of the locking mechanism while continuously pulling the cable, and the fuel tank cap will open easily. Some models have a dedicated switch on the locking mechanism; pressing this switch will open the fuel tank cap. 3. The trunk is separated from the cabin by the rear seats. By removing the rear seats, you can access the trunk from the cabin. Once inside the trunk, use a screwdriver to push or turn the movable parts on the door lock to open it.
2
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.