How to troubleshoot a faulty engine in a Kia Rio?

I have been experiencing some issues with my Kia Rio's engine recently. It seems to be running rough and losing power. I have checked the spark plugs and air filter but they seem to be fine. Any suggestions on how to troubleshoot and fix this issue?

Firstly, check the fuel filters and replace if necessary. A clogged filter can cause issues with the engine's performance. You can also try cleaning the fuel injectors as they may be clogged as well.

Another common issue with the Kia Rio is a faulty ignition coil. Check if any of the coils are showing signs of damage or wear and replace if needed.

If the issue persists, it may be due to a faulty oxygen sensor. This can cause the engine to run lean and affect its performance. Get the sensor checked and replaced if necessary.

It is always a good idea to get your vehicle regularly serviced to avoid any major issues. Consider taking it to a certified mechanic for a check-up and they can diagnose any potential problems.