Being the victim of frequent noises on your car tends to be unpleasant, a car is so complicated that it is most of the time challenging to locate its origin and even more complicated to find the part that triggers it. In the event you too have already experienced a cold engine noise on your BMW 5 Series, we can surely support you. In reality, our team made the decision to compose this content page in order to review the main triggers of an engine that rattles when cold on your BMW 5 Series. First we will check out engines that is rattling only when starting, then because of improper oil and finally because of glow plugs.

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The engine of my BMW 5 Series is rattling only when starting

If the engine of your BMW 5 Series generates a cold rattles, especially when starting and which ends fairly quickly afterwards, it is possible that your engine lubrication is responsible. In reality, 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 thick. If this is your situation, after a few tens of seconds the engine that slams your BMW 5 Series 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 BMW 5 Series that rattles when cold because of too fluid oil

Another possibility which can explain an engine which cold rattling on your BMW 5 Series is that during an oil change the choice of oil was not perfect, 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 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 BMW 5 Series, do not be reluctant to change it with the right oil.

Engine that rattles when cold on my BMW 5 Series 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 BMW 5 Series glow plugs that are defectives. In reality, a dead spark plug will trigger the associated cylinder not to heat up and will cause a stronger rattles on an engine BMW 5 Series, so take into account diagnosing 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 described to you, the main causes of an engine that cold slam on a car, do not be reluctant to have a look at our page dedicated to your car to find extra info on all the breakdowns associated with your vehicle.

If perhaps you have any additional questions about the BMW 5 Series, do not hesitate to consult our BMW 5 Series category.