Coming accross constant noises on your car has a tendency to be annoying, a motor vehicle is so complicated that it is generally challenging to discover its origin and even more challenging to find the component that causes it. In case you too have previously faced a cold engine noise on your BMW X3, we can definitely help you. In fact, our team decided to write this content to be able to review the main causes of an engine that rattles when cold on your BMW X3. First we will take a look at engines that is rattling only when turned on, then because of improper oil and finally because of glow plugs.

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The engine of my BMW X3 is rattling only when starting

If the engine of your BMW X3 makes a cold rattles, specifically when starting and which fades fairly quickly afterwards, it is possible that your engine lubrication is at fault. In fact, 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 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 BMW X3 should come back to normal operation because the lubrication of the engine will be done naturally, make sure to verify the condition of the engine.

Engine of my BMW X3 that rattles when cold because of too fluid oil

Another possibility which can explain an engine which cold rattling on your BMW X3 is that during an oil change the selection 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 picked, it is possible that when cold, the lubrication it allows is not 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 BMW X3, do not hesitate to change it with the right oil.

Engine that rattles when cold on my BMW X3 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 X3 glow plugs that are defectives. In fact, a dead spark plug will cause the connected cylinder not to heat up and will create a stronger rattles on an engine BMW X3, so take into account 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 described to you, the main reasons of an engine that cold slam on a car, do not hesitate to read our page specialized to your car to find more details on all the breakdowns related to your motor vehicle.

To find more tips on the BMW X3, take a look at the BMW X3 category.