Being subject to constant noise on your car tends to be annoying, a car is so complex that it is constantly difficult to find its origin and even more so to find the part that produces it. If you have already experienced a clicking noise on your Mercedes A class, we will most likely be able to support you. Indeed, our editorial staff decided to compose this content page in order to review the main causes of a clicking noise on Mercedes A class. This is why, firstly, we will look at what are the origins of this type of noise coming from your engine block, then those of a noise coming from your direction and finally, the origins of clicking noise on Mercedes A class coming from your suspensions.
I perceive a clicking noise on Mercedes A class on my engine
Verify your high engine
If you perceive a clicking noise on Mercedes A class, and this noise is located at the top of the engine, it means that it comes from your cylinder head and its associated parts. Two parts can be the causes of these ticking noises on Mercedes A class. Either the hydraulic pushers , in most cases it is because of their faulty “hydraulic catch-up” system that we will hear these clicking noises, generally when cold and disappear when hot. Otherwise, it is the interplay of your rocker arms or their state of wear that is at issue. In this situation, remember to change them.
Verify your low engine
If you have determined the region of source of the Mercedes A class clikcing noises coming from your low engine, it may be that your rods or piston shafts are the causes. In both circumstances, the risk in the long term is the breakage of the motor. These two maintenance are very difficult and most mechanics will suggest you to swap the engine of your Mercedes A class.
Combustion problem
Finally, if you have the feeling that this clicking noise on Mercedes A class is connected to the combustion of your engine, there are three possible reasons of it. Verify the state of your glow plugs which, if worn, can hinder the proper combustion of the fuel mixture. Then, it is conceivable that your timing belt is shifted and that it does not properly manage the timing of the various engine parts to promote good combustion. And finally, the most classic reason, comes from your injection, which is either blocked or one or more injectors are injured. In this circumstance, do not hesitate to read this content page which deals in detail with the different injection sounds on Mercedes A class.
I perceive a clicking noise on Mercedes A class in my direction
Verify the state of the gimbals
One of the most regular causes of a clicking noises in the direction of your Mercedes A class is linked with the direction of the car. Indeed, the cardans and their bellows are parts that are constantly stressed during your changes of direction or that you turn your wheels and a wear of one of them can create a ticking type of sound when you approach the stop zone of your steering. A bellows with holes will damage the cardan shaft very quickly and must be changed rapidly, otherwise the entire cardan shaft will have to be changed. Consider taking a look at it. If you would like more detailed information about gimbals noises on Mercedes A class, do not hesitate to consult this complete guide.
Verify the rest of your direction
Finally, when you detect a clicking noise on your Mercedes A class, it is conceivable that it is the direction that is involved. Just like the gimbals, the steering part is mobilized when you turn your wheels. If this is the circumstance, the parts that may have been damaged due to normal wear and tear or impact (e. g. sidewalks) are steering rods, stabilizer bar silentblocks or steering triangles.
I perceive a clicking noise on Mercedes A class coming from my suspensions
Verify the suspension
If you experience a clicking noise on your Mercedes A class once you pass a speed bump, it is really conceivable that your suspension block is the cause of the noise. Indeed, it may be the suspension cups, which, when they are outdated, have the rubber (silentbloc) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its role and during small jolts that compress the suspensions. To examine if this is the issue that concerns you, take a dented road and, at low speed, listen to the noise coming from your front axle when you pass over holes. If these are the cups, consider changing them quickly as this may affect other parts and require more expensive repairs.
Check spring and cylinder
If you detect a clicking noise on your Mercedes A class at the suspension level, it is highly conceivable that spring wear or shock cylinder deformation may be a explanation. To examine the shape of the spring, position the vehicle on a flat surface and measure that the heights from the ground to the bottom of the body are similar on each side (empty car for measurement). You can also examine between the front and rear, if there is a gap too significant it denotes that most likely your springs are worn, if you see a leak go a little further in the article to have the solution to this problem. For the cylinder the verification is visual, make sure that it seems to work in a straight axis. And that there is no angle that would alter its proper functioning. If one of them breaks in both situations, you should consider swapping it or them. If you have the feeling that this noise is more like a squeaking noise on Mercedes A class than a clicking noise, don’t hesitate to consult this article.
