Coming accross constant noises on your car tends to be distressing, a motor vehicle is so complex that it is generally challenging to find its origin and even more complicated to find the part that motives it. In case you too have previously experienced a cold engine noise on your Mercedes Cla, we can surely help you. Indeed, we chose to compose this document to be able to review the main motives of an engine that rattles when cold on your Mercedes Cla. First we will look at engines that is rattling only at start up, then because of improper oil and finally because of glow plugs.


The engine of my Mercedes Cla is rattling only when starting

If the engine of your Mercedes Cla makes a cold rattles, specifically when starting and which ends 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 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 Cla should go back to normal performance because the lubrication of the engine will be done normally, be sure you verify the condition of the engine.

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

Another possibility which can explain an engine which cold rattling on your Mercedes Cla is that during an oil change the choice 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 picked, it is possible that when cold, the lubrication it allows is not sufficient 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 Cla, do not think twice to replace it with the right oil.

Engine that rattles when cold on my Mercedes Cla cause of the glow plugs

If you have a diesel engine, your engine is rattling when cold, and it has complication starting when it is cold, it may be your Mercedes Cla glow plugs that are at the end of their life. Indeed, a dead spark plug will cause the linked cylinder not to heat up and will bring about a stronger rattles on an engine Mercedes Cla, so think about examining the state of your spark plugs separately using a multimeter, it may be that only one is concerned like all of them. Here, we have revealed to you, the main causes 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 additional details on all the breakdowns linked to your car.

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