It is never enjoyable to perceive a noise in your automobile that you don’t know the starting point of. So, what if you discover a loud noise that lasts on your BMW 7 Series? It is very possible that this is a minor problem, but before beeing sure, it is better to do some investigations. Whether that loud noise comes from the front of the vehicle, from the rear, whether it appears when you accelerate or when you are parked, our team has made this content to help you solve it. First, we will summarize the possible explanations for the trouble according to when loud noise shows up on your BMW 7 Series, and then we will give attention to the region of origin of the noise. In any case, if this noise persists, follow these advice to help you find the source.
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When does my BMW 7 Series generate a loud noise?
One way to discern a noise from your BMW 7 Series is to establish when it occurs. Indeed, some complications can be connected to parts that are only stressed under certain occasions. It is this approach that we will focus on in this first part.
Loud noise BMW 7 Series when accelerating
Loud noise on BMW 7 Series that takes place when you are accelerating can be symptomatic of different failures. In fact, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will generate a much higher noise than during normal use. Additionally, it is also highly possible that loud noise on your BMW 7 Series is associated with 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 problem may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
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When my BMW 7 Series is stopped
If your BMW 7 Series makes a loud noise while not accelerating, engine on, the problem may be in connection with poor air intake. An air intake hose that has come loose or has a hole in it may be the reason.
Where does loud noise come from on my BMW 7 Series and how can I be sure of its origin?
Now that we have found the origin of the noise, we will deal with the verification stage to make certain that this is the concern you are encountering.
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The loud noise comes from the wheels of my BMW 7 Series
As we have seen earlier in this article, loud noise from the wheels of your BMW 7 Series may be in connection with two main problems. 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 consider to verify 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 swap 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 7 Series that is the matter, you will tend to feel a vibration in the direction of the car as you go faster. In both circumstances, you will have to go to your auto mechanic to swap the tires or accomplish a balancing.
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The loud noise comes from the engine of my BMW 7 Series
In case you have identified loud noise as coming from the engine of your BMW 7 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 7 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 generate an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then verify that the engine idle speed is not random. In case you confirm one of these two trouble, take your car to your mechanic .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have recognized comes from the exhaust pipe of your BMW 7 Series, it is highly possible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your BMW 7 Series, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To verify this, get help from someone who will stand under the vehicle 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.
