Being the victim of constant noises on your car will probably be upsetting, a automobile is so sophisticated that it is generally challenging to find its source and even more challenging to find the part that causes it. In case you too have already experienced a cold engine noise on your Mercedes Classe A 4, we can certainly help you. Indeed, our team decided to write this article content in order to examine the main causes of an engine that rattles when cold on your Mercedes Classe A 4. First we will check out engines that is rattling only at start up, then because of improper oil and finally because of glow plugs.


The engine of my Mercedes Classe A 4 is rattling only when starting

If the engine of your Mercedes Classe A 4 produces a cold rattles, especially when starting and which disappear fairly quickly afterwards, it is possible that your engine lubrication is to blame. Indeed, the oil strainer (the part that sucks up the oil and makes it rise to the top of the engine) can be damaged 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 Classe A 4 should go back to normal performance because the lubrication of the engine will be done normally, be sure you examine the condition of the engine.

Engine of my Mercedes Classe A 4 that rattles when cold because of too fluid oil

Another possibility which can justify an engine which cold rattling on your Mercedes Classe A 4 is that during an oil change the choice of oil was not perfect, indeed, 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 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 advised by the manufacturer, if your engine clicking is strong or if it persists on your Mercedes Classe A 4, do not think twice to swap it with the right oil.

Engine that rattles when cold on my Mercedes Classe A 4 cause of the glow plugs

If you have a diesel engine, your engine is rattling when cold, and it has problems starting when it is cold, it may be your Mercedes Classe A 4 glow plugs that are at the end of their life. Indeed, a dead spark plug will trigger the attached cylinder not to heat up and will create a stronger rattles on an engine Mercedes Classe A 4, so take into consideration evaluating the state of your spark plugs separately using a multimeter, it may be that only one is involved like all of them. Here, we have revealed to you, the main reasons of an engine that cold slam on a car, do not think twice to have a look at our page dedicated to your car to find further details on all the breakdowns related to your car.

If you wish more guides on the Mercedes Classe A 4, go to our Mercedes Classe A 4 category.