What are some common issues with the Ford Transit Custom engine?

I've been experiencing some strange noises coming from my Ford Transit Custom's engine. It's been running fine but I'm worried it could be something serious. I'm not very familiar with cars, so any advice would be greatly appreciated.

One common issue with the Ford Transit Custom engine is a faulty timing chain. This can cause strange noises and should be addressed as soon as possible to avoid further damage.

Another potential issue could be a faulty fuel injector. This can cause a rough running engine and may need to be replaced.

It's also possible that the issue is simply low oil levels. Check your oil levels and top up if necessary, as this can cause strange noises in the engine.