Being the victim of regular noises on your car tends to be unpleasant, a vehicle is so complex that it is generally difficult to locate its origin and even more difficult to find the part that causes it. In case you too have already experienced a cold engine noise on your car, we can surely help you. Indeed, our editorial staff decided to write this article in order to review the main causes of an engine that rattles when cold on your car. First we will look at engines that is rattling only at start up, then because of unsuitable oil and finally because of glow plugs.

engine rattling when cold

The engine of my car is rattling only when starting

If the engine of your car produces a cold rattles, especially when starting and which fades 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 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 car should return to normal operation because the lubrication of the engine will be done naturally, remember to check the condition of the engine.

Engine of my car that rattles when cold because of too fluid oil

Another possibility which can explain an engine which cold rattling on your car is that during an oil change the choice of oil was not perfect, indeed, 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 sufficient 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 car, do not hesitate to change it with the right oil.

engine rattling when starting

Engine that rattles when cold on my car 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 glow plugs that are at the end of their life. Indeed, a dead spark plug will cause the associated cylinder not to heat up and will cause a stronger rattles on an engine car, so think about testing 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 reasons of an engine that cold slam on a car, do not hesitate to consult our page dedicated to your car to find additional information on all the breakdowns related to your vehicle.