Being the victim of constant noises on your car has a tendency to be upsetting, a vehicle is so sophisticated that it is most of the time complicated to track down its source and even more difficult to find the part that causes it. In case you too have previously came accross a cold engine noise on your Mercedes Benz GLS Class, we can definitely help you. Indeed, our editorial staff chose to produce this content in order to inspect the main causes of an engine that rattles when cold on your Mercedes Benz GLS Class. First we will look at engines that is rattling only when turned on, then because of unsuitable oil and finally because of glow plugs.

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The engine of my Mercedes Benz GLS Class is rattling only when starting

If the engine of your Mercedes Benz GLS Class generates a cold rattles, especially when starting and which disappear quickly afterwards, it is possible that your engine lubrication is responsible. Indeed, the oil strainer (the part that sucks up the oil and makes it rise to the top of the engine) can be harmed and therefore take some time to make the oil rise when it is still very viscous. If this is your situation, after a few tens of seconds the engine that slams your Mercedes Benz GLS Class should return to normal operation because the lubrication of the engine will be done naturally, make sure to examine the condition of the engine.

Engine of my Mercedes Benz GLS Class that rattles when cold because of too fluid oil

Another possibility which can justify an engine which cold rattling on your Mercedes Benz GLS Class is that during an oil change the selection of oil was not best, in reality, engine oils differ on their viscosity, which we will compare with the “W” value, the higher this value is the thicker the oil will be and vice versa. If a too fluid oil has been chosen, it is possible that when cold, the lubrication it allows is not good enough to limit engine slamming, compare the oil used and the oil suggested by the manufacturer, if your engine clicking is strong or if it persists on your Mercedes Benz GLS Class, do not hesitate to change it with the right oil.

Engine that rattles when cold on my Mercedes Benz GLS Class cause of the glow plugs

If you have a diesel engine, your engine is rattling when cold, and it has difficulty starting when it is cold, it may be your Mercedes Benz GLS Class glow plugs that are defectives. Indeed, a dead spark plug will induce the linked cylinder not to heat up and will provoke a stronger rattles on an engine Mercedes Benz GLS Class, so think about trying out the state of your spark plugs individually using a multimeter, it may be that only one is involved like all of them. Here, we have described to you, the main causes of an engine that cold slam on a car, do not hesitate to read our page dedicated to your car to find extra information on all the breakdowns linked to your vehicle.

To find more tips on the Mercedes Benz GLS Class, take a look at the Mercedes Benz GLS Class category.