When you come across irregular sounds on your BMW 2 Series you tend to worry about them. Especially when you feel a noise when you accelerate on your BMW 2 Series. It is immediately assimilated to an engine trouble and can therefore be serious. As we know that you do not take these problems lightly, we have decided to publish this content page to help you find the causes and wipe out this issues as quickly as possible. To do this, we will first see what are the causes of a high pitched noise when accelerating with my BMW 2 Series, then what is a whistling or ratling noise at the acceleration of my BMW 2 Series, then the sources of a noise that intensifies during acceleration and at last a noise that ends when I stop accelerating.
Ma BMW 2 Series makes a high-pitched noise when I accelerate:
If your BMW 2 Series produces a loud noise when you accelerate, it is quite plausible that the alternator belt is the induce of your trouble. You will need to define if this noise shows up abruptly and if it can stop as it started. The alternator belt is a wearing part that is used to bring power to the secondary components of your BMW 2 Series’s engine and although it is less important than the timing belt it can generate engine troubles if it stops working. This noise may be a indicator of a slackened belt, in which case the tensioner roller or its wear and tear may be at fault. In any case, check the state of your belt and its tension. If it causes this acceleration noise on BMW 2 Series, go to your auto mechanic.
Ma BMW 2 Series makes whining noise when I accelerate:
- Rattling or whistling noise created by the turbo
- Humming noise caused by air leakage
If you have a power loss that accompanies the rattling noise when you accelerate with your BMW 2 Series, it is possible that your turbo is failing and some of its parts are at the end of their life. Examine it and change it if it is the induce, otherwise you risk clogging your engine in the long run. If you perceive this blowing or whistling noise on your car, feel free to read this article about turbo noises on BMW 2 Series, if you would like more info.
If, on the other hand, you do not experience any power loss due to an humming noise on your BMW 2 Series, it is more than likely that you have one of your junctions or air hoses that has holes. So check the whole air supply system from your air filter to your engine to determine the origin of this acceleration sound.
Ma BMW 2 Series produces an increasingly loud noise when I accelerate:
If, on the other hand, you have the feeling that the more you gain speed, the more your noise at acceleration on BMW 2 Series gets loud, then you will have to check out the rolling parts of your automobile. In fact, if this loud noise does not appear when you iddle, it is necessarily connected to your transmission, and, in general, to your wheels. The most regular cause is the state of your bearings, so remember to check their state to ensure that it is not the cause of this loud noise when you accelerate. If not, go to this document about the noises related to BMW 2 Series noise wheels.
Ma BMW 2 Series generates a noise when I accelerate that ends when I stop accelerating:
Finally, if you experience a noise when accelerating with your BMW 2 Series and this noise which could be a cliking sound tends to reduce when you disengage (press the clutch pedal), then one of the wear parts of your clutch system may be the cause. In fact, the clutch release bearings must be replaced around every 120 000 / 130 000km. To test it, you just have to see if you have more difficulty than every time shifting gears, if you feel a resistance either stronger or non-existent in the clutch pedal. If you have any of these manifestations, go to your auto technician to change the clutch release bearings on your BMW 2 Series. Look at our article on clutch noise on BMW 2 Series for more information.
