What can be more annoying than noises when you start your vehicle… In fact, you plausibly previously discovered noises when you start your BMW 4 Series and usually it’s frustrating. It might not be anything critical, but each new engine starts usually will turn into a scary moment during which you don’t know if your engine will start. That is why our team has made the decision to prepare this article to help you find its source. To do this, first, we will see the case of noise when starting on BMW 4 Series but the vehicle does not start, and finally, the noise you can experience on your vehicle if it starts, first cold and then hot.
I notice a noise when I try to start my BMW 4 Series, but the engine doesn’t start
I notice a clicking noise at the start of my BMW 4 Series
If you notice a noise when you want to start your vehicle, and it does not want to turn on, it is most likely that it is the battery that is causing the problem. In fact, if you hear clicking noise when you start your BMW 4 Series, and it sounds like a ticking, you most likely lack the energy to run your starter, check your battery with a voltmeter and change it if required. In the case that after verifying your battery, you still experience a noise when starting your BMW 4 Series and it does not want to start, read this content about starter motor noises on BMW 4 Series for more information and to locate the source of your problem.
I acknowledge a noise when I start my BMW 4 Series but the engine it starts
I notice a noise when I start my BMW 4 Series
- Grinding or squealing type noises when I start cold BMW 4 Series :
If you notice a noise when you start your BMW 4 Series, and this noise sounds like grinding or squealing noise, which can also be related to vibrations, it is possible that it is the combustion of your vehicle that is involved. In fact if you have an air/fuel mixture that is not good the normal performance of the engine will be altered. Verify the condition of your injectors and air intake system. For more information on the source of injection-related noises on BMW 4 Series, browse this article content.
- Cold start friction parts BMW 4 Series :
If you notice cold friction noises on BMW 4 Series, it is practically sure that they come from one of your belts. Either the serpentine belt starts to wear out and therefore causes a friction noise. It is also possible that the tensioner roller or damper pulley is worn out and that as a result the extension belt provoke a friction noise, often when cold. Visually check your belt and change it if necessary. If you have other friction noises, and it doesn’t originate from your serpentine belt, we have a full content on engine of your BMW 4 Series.
I notice a noise when starting my BMW 4 Series even when hot
- rubber mount / silent bloc dead motor
If you notice a clacking noise just when you start your car’s engine and it is more than 100,000 km long, it is possible that some of your engine silentblocks or rubber mounts are good to be replaced. And the huge vibrations produced by starting the engine can create starting noise on BMW 4 Series. Verify their condition and change them if necessary. Read this content if you would like to have detailed information on rubber mount noises on BMW 4 Series.
- Motor flywheel
Finally, if you experience a noise that sounds a little like a crank noise when you start your BMW 4 Series, even when hot, it is possible that if your series is equipped with a dual-mass flywheel, it is the source of your trouble. In fact, these parts have created a lot of trouble on many automobiles. When they take part in the game they generate noise when you start your BMW 4 Series and when you turn off the engine. Have his condition inspected by a specialist.