Being subject to recurring noise on your vehicle tends to be frustrating, a vehicle is so complex that it is generally difficult to locate its origin and even more so to find the part that produces it. If you have already experienced a clicking noise on your Mercedes Benz CLA Class, we will probably be able to help you. In fact, our editorial staff decided to write this document in order to review the main causes of a clicking noise on Mercedes Benz CLA 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 Benz CLA Class coming from your suspensions.
I notice a clicking noise on Mercedes Benz CLA Class located on my engine
Verify your high engine
If you notice a clicking noise on Mercedes Benz CLA Class, and this noise is located at the top of the engine, it means that it originates from your cylinder head and its accompanying parts. Two elements can be the triggers of these ticking noises on Mercedes Benz CLA Class. Either the hydraulic pushers , in most cases it is because of their faulty “hydraulic catch-up” system that we will notice these clicking noises, generally when cold and go away when hot. Otherwise, it is the interplay of your rocker arms or their state of wear that is at issue. In this circumstance, remember to change them.
Verify your low engine
If you have distinguished the area of origin of the Mercedes Benz CLA Class clikcing noises coming from your low engine, it may be that your rods or piston shafts are the triggers. In both situations, the risk in the long term is the breakage of the motor. These two repairs are very complicated and most mechanics will recommend you to replace the engine of your Mercedes Benz CLA Class.
Combustion problem
Finally, if you have the feeling that this clicking noise on Mercedes Benz CLA Class is in connection with the combustion of your engine, there are three possible origins of it. Verify the condition of your glow plugs which, if worn, can hinder the proper combustion of the fuel mixture. Then, it is plausible that your timing belt is shifted and that it does not properly manage the timing of the various engine elements to promote good combustion. And finally, the most classic cause, comes from your injection, which is either blocked or one or more injectors are injured. In this case, do not hesitate to consult this document which deals in detail with the different injection sounds on Mercedes Benz CLA Class.
I notice a clicking noise on Mercedes Benz CLA Class in my direction
Verify the condition of the gimbals
One of the most basic causes of a clicking noises in the direction of your Mercedes Benz CLA Class is connected to the direction of the vehicle. 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 get closer to the stop zone of your steering. A bellows with holes will affect 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 Benz CLA Class, do not hesitate to read this complete guide.
Verify the rest of your direction
Finally, when you recognise a clicking noise on your Mercedes Benz CLA Class, it is plausible 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 case, 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 notice a clicking noise on Mercedes Benz CLA Class coming from my suspensions
Verify the suspension
If you experience a clicking noise on your Mercedes Benz CLA Class once you pass a speed bump, it is highly plausible that your suspension block is the induce of the noise. In fact, 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 verify if this is the trouble that worries you, take a dented road and, at low speed, listen to the noise originating from your front axle when ever you pass over holes. If these are the cups, consider changing them soon as this may damage other parts and require more expensive repairs.
Check spring and cylinder
If you detect a clicking noise on your Mercedes Benz CLA Class at the suspension level, it is highly plausible that spring wear or shock cylinder deformation may be a cause. To verify the shape of the spring, position the car on a flat surface and measure that the heights from the ground to the bottom of the body are identical on each side (empty car for measurement). You can also verify between the front and rear, if there is a gap too large it denotes that most likely your springs are worn, if you discover a leak go a little further in the article to have the solution to this problem. For the cylinder the verification is visual, be 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 think about swapping it or them. If you have the feeling that this noise is more like a squeaking noise on Mercedes Benz CLA Class than a clicking noise, don’t hesitate to consult this article.
