Why is my Ford Fiesta engine making strange noises?

I recently purchased a Ford Fiesta and have noticed that the engine is making uncharacteristic noises. It almost sounds like a knocking or sputtering sound. Is this something I should be concerned about? What could be causing this issue?

From my experience, it could be a faulty spark plug or an issue with the timing belt. I would recommend taking it to a mechanic to get it looked at and fixed as soon as possible.

It could also be a problem with the fuel pump or the fuel filter. These are relatively easy and inexpensive fixes, but it's still important to get it checked out to prevent any further damage.