Why is my Kia Picanto's engine making a rattling noise?

I recently noticed a rattling noise coming from my Kia Picanto's engine when I start the car. What could be causing this and how can I solve it?

One possible reason for the rattling noise could be an issue with the timing belt. It is important to get this checked and replaced if necessary to avoid any further damage to the engine.

Another possibility is a problem with the engine's oil levels. Make sure to regularly check and change the oil to avoid any potential issues.

It could also be a problem with the spark plugs. Consider getting them checked and replaced if needed to improve engine performance.