···
Log in / Register

Why is the car making a roaring noise?

4 Answers
AmeliaFitz
09/07/25 3:01am

It could be due to engine knocking or valve noise. Here is some relevant information about engines: 1. Concept: An engine (Engine) is a machine that converts other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines typically convert chemical energy into mechanical energy. 2. Classification: Internal combustion engines, external combustion engines, external combustion engines mean that the fuel burns outside the engine, gas turbines, jet engines.

Was this review help?
14
3
Share
RhettLynn
09/19/25 2:31am

If the car makes a roaring noise, I think the most common cause is engine issues, such as poor spark plug ignition leading to knocking, which sounds like thumping or roaring. Alternatively, there might be a leak in the exhaust system, and a damaged exhaust pipe can also produce a similar rumble, especially noticeable during acceleration. I always make it a habit to park in a safe place, open the hood, and listen for the exact source of the noise. If it's coming from the front, it might be an engine problem; if it's from the rear, it could be the exhaust. Don’t ignore this small signal—it might indicate a bigger issue, like engine overheating or part wear. It’s best to visit a professional repair shop as soon as possible, as driving safety is the top priority. Additionally, regularly replacing spark plugs and checking the exhaust system can prevent such noises, ensuring a smoother and quieter ride.

Was this review help?
6
1
Share
Expand All
HopeRose
11/02/25 2:53am

My old car was making a loud rumbling noise the other day, and it seemed to be coming from the wheel area. I suspected it was due to worn-out bearings, as it made a humming sound while driving. Another time, when the tire pressure was low or the tires were unevenly worn, it also produced a rumbling noise when turning, which was quite annoying. I did a quick check on the tire pressure and the bearing area—if they felt unusually warm, that was a sign of trouble. In such cases, I immediately slow down and pull over to avoid any accidents. Later, I took it to the repair shop, and sure enough, the rear wheel bearing was damaged. It was fixed for a small cost, so I suggest you don’t delay and get it checked early—safety first.

Was this review help?
8
4
Share
Expand All
IrisMarie
12/16/25 2:57am

A roaring engine sound is often a warning of engine trouble. I think it's best to start with the simple things first—it could be an intake or fuel supply issue, such as a clogged air filter or poor-quality gasoline causing incomplete combustion. This kind of noise isn't just annoying; it also increases emissions and pollutes the environment. I always recommend regular maintenance, like changing the oil and cleaning the intake system, which can prevent 90% of similar issues. If left unaddressed, the noise may worsen into a more serious malfunction, leading to costlier repairs. For safety, stop the car to check and confirm the source of the sound, then head straight to a repair shop.

Was this review help?
18
3
Share
Expand All
More Forum Discussions

How long does it usually take for the review of Subject 2 training hours?

Subject 2 training hours review takes approximately 15 days. Here is relevant information: 1. New regulations: According to the new "Motor Vehicle Driver Training Teaching and Examination Outline", the required training hours for each subject of C1 license are: Subject 1 (12 hours), Subject 2 (26 hours, including 2 theoretical hours), Subject 3 (40 hours, including 16 theoretical hours). Among them, the practical training hours for Subject 2 (five compulsory tests) and Subject 3 (long-distance and road tests) are both 24 hours, accounting for the majority of the total 78 training hours. For C1 license, 24 training hours must be completed for Subject 2 before taking the exam. 2. Subject 2: Also known as the small road test, it is part of the motor vehicle driver's license assessment and refers to the field driving skill test. The test items include five compulsory tests: reversing into a garage, parallel parking, stopping and starting on a slope, turning at a right angle, and driving on a curve.
17
4
Share

What are the differences between BMW 330 and BMW 320?

The differences between BMW 330 and BMW 320 are as follows: 1. Different piston heads. 2. Different cylinder head bolts. 3. Different ECUs. 4. Different drive shafts. 5. Different half shafts. 6. Different rear axle differentials. 7. Different exhaust pipes. 8. Different wheel and tire sizes (same for iM models), with the 320 featuring 17-inch wheels and the 330 equipped with 18-inch 400M wheels, front 225/45R18 and rear 255/40R18. 9. The 320 is currently the lowest-priced imported 3 Series family sports sedan with a 0-100 km/h acceleration time of 7.6 seconds, available in Fashion and Sport Design Package versions, differing mainly in practical configurations. The 330 comes with M3 package components, is a standard 3 Series model with a 0-100 km/h acceleration time of 6.1 seconds, and the key differences lie in the M-grade package components, as well as the availability of a hybrid version in the 3 Series lineup.
7
4
Share

What Causes Abnormal Idle Vibration When the Car Air Conditioner is On?

Here is a detailed analysis of the specific reasons for abnormal idle vibration when the car air conditioner is on: 1. Severe engine carbon buildup: The most common cause of vibration is a dirty throttle body or excessive carbon deposits in the fuel injectors. When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold-start injector is largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts, making it difficult to start. The solution is to clean the fuel system and check if the idle control valve has carbon buildup, which should be cleaned. 2. Unstable fuel pressure: Check whether the fuel supply pressure and the intake pressure sensor are functioning properly. If the fuel pump supply pressure is abnormal or the intake pressure sensor values are incorrect or malfunctioning, it can cause body vibration. The solution is to check the fuel pressure and replace components if necessary. 3. Aging engine components: Car vibration is also related to worn engine mounts. Engine mounts are essentially the shock absorption system of the engine, responsible for absorbing minor vibrations during engine operation.
16
1
Share

What is the engine model of the Soueast A5 Yiwu?

The engine model of the Soueast A5 Yiwu is the 4A91, a 1.5L naturally aspirated engine. An engine is a machine capable of converting other forms of energy into mechanical energy, which can be used either as a power generation device or refer to the entire machine including the power unit. The Soueast A5 Yiwu's engine has a maximum power of 88 kW and a maximum horsepower of 120 hp, paired with either a 5MT or CVT continuously variable transmission, meeting the China VI emission standards. The dimensions of the Soueast A5 Yiwu are 4588mm in length, 1780mm in width, and 1485mm in height, with a wheelbase of 2625mm. It comes equipped with features such as driver's seat belt reminder, brake force distribution, ABS anti-lock braking system, child seat anchors, and rear radar.
3
1
Share

What are the precautions for idle cars?

During the period when a car is idle, the following precautions should be taken: First, pay attention to keeping the cab dry: because there are many metal parts and electrical appliances in the cab. If the cab is relatively humid, it is easy to corrode metal parts and damage electrical components. Second, pay attention to checking the battery: because most cars use lead-acid batteries, which will self-discharge even when the car is parked. Under normal conditions, the self-discharge of the battery can reduce the capacity by more than 1% per day and night. More seriously, after long-term self-discharge, sulfides will form on the surface of the battery plates, affecting the recharging effect of the battery, and may eventually lead to premature scrapping of the battery. Third, pay attention to the maintenance of engine oil and oil filter: it is necessary to replace the engine oil and filter element with new ones, because the old oil contains acids and moisture generated by combustion, which can erode the interior of the engine. After changing the oil, the engine needs to run for a period of time to circulate the new oil to all parts of the engine.
14
3
Share

Where should temporary license plates be affixed on a car?

Temporary license plates should be affixed as follows: 1. Two temporary license plates should be affixed simultaneously. One should be placed in the lower left or right corner of the front windshield inside the car, ensuring it does not obstruct the driver's view. The other should be affixed in the lower left corner of the rear window. 2. For other types of vehicles where installation conditions are limited, only one temporary license plate is required. It should be affixed in the lower left or right corner of the front windshield inside the car, in a position that does not affect the driver's visibility, to ensure driving safety. 3. The paper motor vehicle license plate that permits temporary road use is also known as a temporary driving license plate. It is a temporary vehicle driving certificate issued by the public vehicle management department for newly purchased vehicles before official registration. 4. The validity period of temporary license plates generally does not exceed thirty days. There are four types: temporary license plates for administrative districts, temporary license plates for cross-administrative districts, temporary license plates for testing purposes, and temporary license plates for special-type motor vehicles.
17
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.