Having a healthy car seems to be a very important prerequisite for most of us, as we are all dependent on our cars, it doesn’t matter if it is to go for you to work or for personal reasons. So when we come across something different about our Mercedes Classe Cls, we logically are likely to ask ourselves questions. If, in your case, it’s your engine that rattles when hot on your Mercedes Classe Cls, you’ve come to the good website. We are aware that this is a recurring trouble and so we have decided to produce a dedicated content page to enable you deal with it. To do so, first we will take a look at the problems in connection with hydraulic tappets and valves, then at combustion problems, and to conclude at the engine rattling when hot because of trouble in connection with the lower engine.

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Engine rattling when hot on my Mercedes Classe Cls because of the hydraulic tappets

If you find out the engine hot rattles on your Mercedes Classe Cls, and this noise is located at the top of the engine, it involves that it comes from your cylinder head and its accompanying components. There are two possible motives of an hot engine rattling on a Mercedes Classe Cls. Either the hydraulic tappets, in most cases it is because of their faulty “hydraulic catch-up” system that you will hear these clicking noises, often when hot and not when cold. In any other case, it is the play of your rocker arms or their state of wear that is responsible. In such a case, reflect on replacing them.

The engine of my Mercedes Classe Cls is doing some rattling noise when hot because of combustion problem

Second option, if you have the feeling that the hot engine rattling is in connection with the combustion of your engine, there are three possible motives of this one. It may be that your timing is out of sync and that it does not manage the synchronization of the different elements of the engine to promote good combustion. And to conclude, the most traditional reason comes from your injectors, which are either clogged or damaged. Don’t hesitate to go to your auto technician so that he can examine the part that seems to be the reason of your engine’s hot clicking on your Mercedes Classe Cls.

Engine of my Mercedes Classe Cls rattling cause of problem in the lower part of the engine

At last, if you have recognized the location of origin of your engine that hot rattles on your Mercedes Classe Cls that comes from your lower engine, it may be that your connecting rods or piston pins are the origin. In both cases, the risk in the long run is engine breakage. These two repairs are particularly complex and most mechanics will advise you to replace the engine of your Mercedes Classe Cls. In any case, don’t wait when you identify such a trouble, it will allow you to prepare for an upcoming big repair or at best find a less expensive option, rather than find yourself faced with a failure with the origin of your engine rattling when hot and the end final result being your engine breaking down on you when you come home from work. Don’t hesitate to read our catalogue of items on your car that can enable you solve other worries or learn more about your Mercedes Classe Cls.

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