Do you listen to an engine noise on your Mercedes Benz M Class when you drive? We can understand that this is very troubling and that you are wondering. Hearing such a noise is not always a good signal, but it may also be nothing major. To support you solve this issue, our team has decided to create this article to help you in this investigation. In order to accomplish this research as accurately as possible, we will first focus on clicking noises, then on whistling noises and, finally, on engine noises on Mercedes Benz M Class metal type.
I listen to a clicking engine noise Mercedes Benz M Class
In case you recognise a clicking engine noise on your Mercedes Benz M Class, and that this noise is close to a click, you will have to identify the origin area of it to be able to know the cause of it. You will need a mechanical stethoscope or a large screwdriver to locate the original area of these noises.
I listen to a clicking noise coming from my high engine
If you listen to an engine noise on Mercedes Benz M Class, and this noise is based at the top of the engine, it means that it is based at your cylinder head and accompanying components. Two components can be the causes of these engine noises on Mercedes Benz M Class. Either the hydraulic pushers, in general it is because of their faulty “hydraulic catch-up” system that we will listen to these clicking noises, often when cold and vanishes when hot. Otherwise, it is your the play of your rocker arms or their state of wear that is the issue. In this case, reflect on swapping them.
I listen to a noise coming from the bottom engine of my Mercedes Benz M Class
If you have distinguished the place of origin of engine noise on Mercedes Benz M Class that comes from your low engine, it may be that your rods or piston shafts are the causes. In both situations, the long-term risk is engine failure. These two fixes are very difficult and most mechanics will advise you to swap the motor of your Mercedes Benz M Class.
I listen to an engine clicking noise on Mercedes Benz M Class coming from combustion
Finally, if you have the feeling that this clicking noise is associated with the combustion of your engine, there are three conceivable causes of it. Check the state of your glow plugs which if worn can hinder the proper combustion of the fuel mixture. Then, your timing belt may be shifted and may poorly 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 obstructed or one or more injectors is damaged. In this case, do not be reluctant to refer to this article which deals in detail with the several injector noises on Mercedes Benz M Class.
Hissing noise / engine friction Mercedes Benz M Class
Engine noise Mercedes Benz M Class close to a bearing
If it is close to a squeaking noise you may have one of the bearings of your engine accessory parts that are reached. So verify the state and try to discover the exact origin of this noise by positioning someone at the engine at idle, and if this noise is more likely to occur in high rpm, accelerate and position someone at the engine block to distinguish the location of origin of the noise. The three components whose bearings are often at the origin of these noises are the water pump, the injection pump and the oil pump.
Engine noise Mercedes Benz M Class when releasing or depressing the clutch
In the event that you identify engine noise on Mercedes Benz M Class, but this noise happens mainly when you release or depress your clutch pedal, in this case it is very likely that your release bearing is worn. In fact, a worn release bearing will make a noise close to a bell noise. To have more details about this noise and if you have managed to verify that the release bearing is indeed the trigger of your concerns, direction here, to find a complete file on release bearing sounds on Mercedes Benz M Class.
Engine noise Mercedes Benz M Class close to a friction
In the event that you listen to a motor noise on your Mercedes Benz M Class, and, that this noise is close to a friction, it is likely that one of your belts or one of the elements that causes it is the source of your problems.Often, we will start to listen to a motor noise on Mercedes Benz M Class, close to a friction when one of the belts is worn out or when one of the related parts like your alternator, or your tensioner roller is the issue. So bear in mind to verify their state and go to your mechanic to swap the components in question. If you have been able to target the noise as coming from the belts and you want more details about it, take a look at this article on belt noise on Mercedes Benz M Class for a complete guide.
Metal motor noise Mercedes Benz M Class
In the event that you listen to an engine noise on Mercedes Benz M Class and this noise is similar to metal noise, it is conceivable that this noise comes from your gearbox or clutch. In fact, a metallic noise in the engine block is often associated with damaged sprockets. Try to verify that this noise comes from the transmission, if this is the case, quickly go to your motor mechanic or you would get a break down. Finally, the second possibility is that your silent engine blocks or rubber mounts may be dead. This causes a metallic noise every time your engine moves, either because of a change of pace (acceleration or braking) or, when you pass on roads in poor state. Check the state of your silentblocks and swap them if required. If you want to have more details about rubber mounts noises on Mercedes Benz M Class, go through this article which gives you more details about the several types of noise and their origins.
