Having a care in good conditions appears to be an essential prerequisite for many people, as we are all dependent on our vehicles, regardless whether it is to get to your job or for personal reasons. So when we observe some thing different about our Scion xB, we logically tend to ask ourselves questions. If, in your case, it’s your engine that rattles when hot on your Scion xB, you’ve come to the right place. We are aware that this is a recurring issue and so we have decided to publish a focused document to enable you deal with it. For this, first we will look into the complications linked to hydraulic tappets and valves, then at combustion complications, and to conclude at the engine rattling when hot because of concerns linked to the lower engine.


Engine rattling when hot on my Scion xB because of the hydraulic tappets

If you perceive the engine hot rattles on your Scion xB, and this noise is located at the top of the engine, it means that it comes from your cylinder head and its accompanying parts. There are two possible triggers of an hot engine rattling on a Scion xB. 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. Otherwise, it is the play of your rocker arms or their state of wear that is responsible. In this instance, reflect on swapping them.

The engine of my Scion xB is doing some rattling noise when hot because of combustion problem

Second probability, if you have the impression that the hot engine rattling is linked to the combustion of your engine, there are three possible triggers of this one. It may be that your timing is out of sync and that it does not control the synchronization of the different elements of the engine to promote good combustion. And to conclude, the most traditional 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 Scion xB.

Engine of my Scion xB rattling cause of problem in the lower part of the engine

To finish, if you have determined the area of origin of your engine that hot rattles on your Scion xB that comes from your lower engine, it may be that your connecting rods or piston pins are the origin. In both situations, 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 Scion xB. In any case, don’t wait when you identify such a issue, it will let you to foresee an upcoming big repair or at best find a cheaper remedy, rather than find yourself faced with a failure with the origin of your engine rattling when hot and the end final result being your engine giving out on you when you come home from work. Don’t hesitate to check out our catalogue of items on your car that can enable you get rid of other concerns or learn more about your Scion xB.

If you have any further questions about the Scion xB, do not hesitate to consult our Scion xB category.