Having a healthy car appears to be a vital requirement for the majority of us, as we are all dependent on our cars, it doesn’t matter if it is to go to your job or for personal travel. So when we come across something different about our BMW 4 Series, we rationally tend to ask ourselves queries. If, in your case, it’s your engine that rattles when hot on your BMW 4 Series, you’ve come to the right place. We are aware that this is a repeating problem and so we have decided to publish a specialized content to help you deal with it. To accomplish this, first we will look into the problems linked to hydraulic tappets and valves, then at combustion problems, and finally at the engine rattling when hot because of trouble linked to the lower engine.
Engine rattling when hot on my BMW 4 Series because of the hydraulic tappets
If you perceive the engine hot rattles on your BMW 4 Series, and this noise is established at the top of the engine, it denotes that it comes from your cylinder head and its accompanying components. There are two possible motives of an hot engine rattling on a BMW 4 Series. Either the hydraulic tappets, in general it is because of their faulty “hydraulic catch-up” system that you will hear these clicking noises, often when hot and not when cold. In any other case, it is the play of your rocker arms or their state of wear that is accountable. In this instance, consider replacing them.
The engine of my BMW 4 Series is doing some rattling noise when hot because of combustion problem
Second option, if you have the feeling that the hot engine rattling is linked to the combustion of your engine, there are three possible motives of this one. It may be that your timing is out of sync and that it does not manage the synchronization of the different components of the engine to create good combustion. And to conclude, the most common reason comes from your injectors, which are either clogged or damaged. Don’t hesitate to go to your mechanic so that he can examine the part that seems to be the reason of your engine’s hot clicking on your BMW 4 Series.
Engine of my BMW 4 Series rattling cause of problem in the lower part of the engine
To conclude, if you have identified the area of origin of your engine that hot rattles on your BMW 4 Series that comes from your lower engine, it may be that your connecting rods or piston pins are the origin. In both cases, the risk in the long run is engine breakage. These two repairs are particularly complex and most mechanics will advise you to replace the engine of your BMW 4 Series. In any case, don’t wait when you detect such a problem, it will allow you to anticipate an upcoming expense or at best find a cheaper solution, rather than find yourself faced with a failure with the origin of your engine rattling when hot and the end end result being your engine breaking down on you when you come home from work. Don’t hesitate to take a look at our catalogue of items on your car that can help you solve other problems or learn more about your BMW 4 Series.
To discover more tips on the BMW 4 Series, take a look at the BMW 4 Series category.
