Facing frequent noises on your car has a tendency to be unpleasant, a vehicle is so complex that it is most of the time complicated to locate its source and even more problematic to find the component that causes it. In the event you too have previously experienced a cold engine noise on your Bmw Serie 3, we can clearly help you. Indeed, our team chose to compose this document in order to review the main causes of an engine that rattles when cold on your Bmw Serie 3. First we will check out engines that is rattling only when starting, then because of unsuitable oil and finally because of glow plugs.


The engine of my Bmw Serie 3 is rattling only when starting

If the engine of your Bmw Serie 3 makes a cold rattles, specifically when starting and which fades quickly afterwards, it is possible that your engine lubrication is at fault. Indeed, the oil strainer (the component that sucks up the oil and makes it rise to the top of the engine) can be malfunctioned and therefore take some 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 Serie 3 should go back to normal performance because the lubrication of the engine will be done naturally, make sure verify the condition of the engine.

Engine of my Bmw Serie 3 that rattles when cold because of too fluid oil

Another possibility which can justify an engine which cold rattling on your Bmw Serie 3 is that during an oil change the selection of oil was not perfect, 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 good 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 Bmw Serie 3, do not think twice to swap it with the right oil.

Engine that rattles when cold on my Bmw Serie 3 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 Bmw Serie 3 glow plugs that are defectives. Indeed, a dead spark plug will induce the associated cylinder not to heat up and will trigger a stronger rattles on an engine Bmw Serie 3, so take into consideration testing 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 explained to you, the main reasons of an engine that cold slam on a car, do not think twice to browse our page specialized to your car to find further details on all the breakdowns related to your car.

Whenever you have any further questions about the Bmw Serie 3, do not hesitate to consult our Bmw Serie 3 category.