It is never relaxing to perceive a sound on your car you don’t where it comes from. So what if you discern a timing belt noise that persists on your BMW 3 Series? It is highly plausible that this is a minor issue, but before being sure, it is better to carry out some investigations. If this belt noise comes from your timing belt, our team has made this article to support you find and fix it. First, we will look at the timing belt noises on your BMW 3 Series and then we will look at the reasons for these noises.timing-belt-noise-bmw-3-series

Noise of timing belt BMW 3 Series

The timing belt has a crucial role to play. It works as a conductor and synchronizes the engine crankshaft to the camshaft. It assures the correct transmission of movement to the valves and pistons, which must open at specific times. It is the link between the top and bottom of the engine. It is sorely tested and wears out with time, it is up to you to respect the manufacturer’s specifications to swap it at the right time, we usually talk about years or mileage to respect. Otherwise, you could be the victim of a engine failure.

I listen to a timing belt loud noise on my BMW 3 Series after replacement

If you listen to a loud whistling sound that does not reduce on the timing belt of your BMW 3 Series, it can be connected to a circular saw sound. It is more than possible that you will have to worry about it immediately. This can come as a result of a poorly performed belt replacement. Indeed, some mechanician want to save time and do not follow the manufacturer’s stress standards. Indeed, to change a timing belt you must first fix the engine in a certain method, with the right tools. Then, when the belt is reassembled, you will have to manage its tension and comply with the manufacturer’s standard. To do this, we will use a tool called a tensiometer, but unfortunately some garages or mechanics do not apply themselves to one of these two tasks, which inevitably triggers major problems for the car owner. This leads to an over-tension of the timing belt which is even greater when hot and may eventually break. Bear in mind to take your car to a professional to confirm and resolve this problem. If, after verifying, this loud noise does not come from your timing belt, read this article on loud noises on BMW 3 Series for more details about it. In the other hand, it could be a serpentine noise on BMW 3 Series that you face.

I notice belt noises squealing or squeaking that intensify BMW 3 Series

Finally, if you listen to asound from your BMW 3 Series’s timing belt, it is imperative to take care of it and take your car to your auto technician or risk engine failure. The cause for this noise is often an end-of-life belt that starts to degrade inside the engine and whose flaps begin to knock against the inside of the timing gearbox. Hurry to your auto mechanic. The replacement of a timing belt kit must always be done in advance as part of normal car maintenance. If you wait until the failure occurs, it will be too late because the consequence of a timing belt failure is the failure of your engine. We will generally take this opportunity to change the accessory belt, the tensioning rollers that manage the tension of the belt and the water pump system. If you’re lucky and this noise doesn’t come from your timing belt, take a look at our article on squeaking noise on BMW 3 Series.