Coming accross constant noises on your car is likely to be upsetting, a automobile is so elaborate that it is generally tricky to find its origin and even more challenging to find the part that causes it. In the event you too have previously came accross a cold engine noise on your Mercedes A class, we can clearly support you. In fact, our team decided to publish this document in order to review the main causes of an engine that rattles when cold on your Mercedes A class. First we will look at engines that is rattling only when starting, then because of unsuitable oil and finally because of glow plugs.

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The engine of my Mercedes A class is rattling only when starting

If the engine of your Mercedes A class produces a cold rattles, especially when starting and which ends before long afterwards, it is possible that your engine lubrication is responsible. In fact, 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 time to make the oil rise when it is still very viscous. If this is your case, after a few tens of seconds the engine that slams your Mercedes A class should go back to normal operation because the lubrication of the engine will be done normally, remember to examine the condition of the engine.

Engine of my Mercedes A class that rattles when cold because of too fluid oil

Another possibility which can explain an engine which cold rattling on your Mercedes A 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 review 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 selected, it is possible that when cold, the lubrication it allows is not enough to limit engine slamming, compare the oil used and the oil recommended by the manufacturer, if your engine clicking is strong or if it persists on your Mercedes A class, do not hesitate to replace it with the right oil.

Engine that rattles when cold on my Mercedes A 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 A class glow plugs that are at the end of their life. In fact, a dead spark plug will cause the linked cylinder not to heat up and will cause a stronger rattles on an engine Mercedes A class, so think about examining the state of your spark plugs independently using a multimeter, it may be that only one is involved like all of them. Here, we have explained to you, the main factors of an engine that cold slam on a car, do not hesitate to read our page dedicated to your car to find further info on all the breakdowns linked to your automobile.

To discover more tips on the Mercedes A class, take a look at the Mercedes A class category.