It is never enjoyable to notice a sound in your automobile that you don’t know the origin of. So, what if you find a loud noise that is persistant on your BMW 2 Series? It is highly possible that this is a minor trouble, but before beeing sure, it is better to carry out some checks. Whether that loud noise comes from the front of the automobile, from the rear, whether it appears when you accelerate or when you are parked, our team has written this article to help you fix it. First, we will point out the possible explanations for the problem according to when loud noise shows up on your BMW 2 Series, and then we will concentrate on the region of origin of the noise. In any case, if this noise continues, follow these instructions to help you find the origin.
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When does my BMW 2 Series produce a loud noise?
One way to identify a noise from your BMW 2 Series is to identify when it shows up. Indeed, some problems can be connected to components that are only stressed under certain types of conditions. It is this technique that we will focus on in this first part.
Loud noise BMW 2 Series when accelerating
Loud noise on BMW 2 Series that takes place when you are accelerating can be symptomatic of several failures. Indeed, if you experience a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will create a much higher noise than during normal operation. In addition, it is also highly possible that loud noise on your BMW 2 Series is related to a wheel bearing, which is one of the most common origins of these types of signs of illness. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the trouble may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it increases speed.
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When my BMW 2 Series is stopped
If your BMW 2 Series makes a loud noise while not accelerating, engine on, the trouble may be connected to poor air intake. An air intake hose that has come loose or has a hole in it may be the cause.
Where does loud noise come from on my BMW 2 Series and how can I be sure of its origin?
Now that we have found the origin of the sound, we will deal with the verification stage to ensure that this is the concern you are having.
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The loud noise comes from the wheels of my BMW 2 Series
As we have seen previously, loud noise from the wheels of your BMW 2 Series may be connected to two main disorders. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So remember to check by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case change it or them quickly. If it is a deformed tire, don’t forget to visually check the entire tread area for linearity. If it is the balancing of the wheels of your BMW 2 Series that is the matter, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both situations, you will have to go to your mechanic to swap the tires or perform a balancing.
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The loud noise comes from the engine of my BMW 2 Series
In case you have discovered loud noise as coming from the engine of your BMW 2 Series, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected with a compression loss during the engine ramp-up phase, so you should encounter a power loss during your acceleration. If the loud noise on your BMW 2 Series is related to air intake, the check will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would cause an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then check that the engine idle speed is not random. In case you confirm one of these two trouble, take your vehicle to your mechanic .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have found comes from the exhaust pipe of your BMW 2 Series, it is highly possible that you have rust if your automobile is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your BMW 2 Series, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To ensure this, get help from someone who will stand under the automobile while you accelerate to find the exact area of origin of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
