Why is my Ford S-Max's engine making a strange ticking noise?

I recently bought a used Ford S-Max and noticed that the engine is making a strange ticking noise. It seems to be coming from the top of the engine and it gets louder as I accelerate. Is this something I should be worried about?

It's possible that this noise is coming from a faulty lifter in the engine. I would recommend taking it to a mechanic to get it checked out. If it is a faulty lifter, it's important to get it fixed before it causes any further damage.

I had a similar issue with my Ford S-Max and it turned out to be a loose spark plug. I would suggest checking all of your spark plugs to make sure they are tightened properly.

This could also be a sign of low oil levels. Make sure to check your oil and top it off if needed. If the noise persists, it's probably a good idea to take it to a mechanic for further diagnosis.