Why is my Ford Focus engine making a loud ticking noise?

I recently noticed a loud ticking noise coming from my Ford Focus engine. It seems to happen more when the car is idling, but it's still present when I'm driving. What could be causing this and how can I fix it?

The most common cause of a loud ticking noise in Ford Focus engines is a faulty or worn out timing belt. This can put strain on other engine components and cause the ticking noise. I suggest having your timing belt replaced as soon as possible to prevent any further damage.

Another potential cause for the ticking noise could be low oil levels. Check your oil level and if it's low, top it up with the recommended oil for your Ford Focus. If the noise persists, it could be a sign of a more serious issue and you should take your car to a mechanic.

It's also possible that the noise is coming from a faulty valve or lifter. This can occur if they become dirty or worn out. In this case, I recommend taking your Ford Focus to a trusted mechanic to have the valves and lifters cleaned or replaced.