Coming accross constant noises on your car is likely to be unpleasant, a vehicle is so complex that it is generally hard to discover its origin and even more hard to find the component that motives it. In case you too have already faced a cold engine noise on your Renault Megane 3, we can certainly support you. Indeed, our editorial staff chose to compose this document in order to inspect the main motives of an engine that rattles when cold on your Renault Megane 3. First we will check out engines that is rattling only at start up, then because of unsuitable oil and finally because of glow plugs.


The engine of my Renault Megane 3 is rattling only when starting

If the engine of your Renault Megane 3 generates a cold rattles, specifically when starting and which ends rather quickly afterwards, it is possible that your engine lubrication is to blame. 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 time to make the oil rise when it is still very thick. If this is your case, after a few tens of seconds the engine that slams your Renault Megane 3 should return to normal functions because the lubrication of the engine will be done normally, be sure you examine the condition of the engine.

Engine of my Renault Megane 3 that rattles when cold because of too fluid oil

Another possibility which can justify an engine which cold rattling on your Renault Megane 3 is that during an oil change the choice of oil was not ideal, indeed, 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 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 Renault Megane 3, do not be reluctant to change it with the right oil.

Engine that rattles when cold on my Renault Megane 3 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 Renault Megane 3 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 bring about a stronger rattles on an engine Renault Megane 3, so take into consideration diagnosing 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 described to you, the main motives of an engine that cold slam on a car, do not be reluctant to consult our page specialized to your car to find more details on all the breakdowns linked to your vehicle.

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