Why is my Toyota Corolla's engine making a clicking noise?

I recently bought a used Toyota Corolla and I've noticed that the engine makes a clicking noise when I start it. Is this normal or should I be concerned? What could be causing this issue?

It is not normal for a Toyota Corolla's engine to make a clicking noise when starting it. This could be an indication of a problem with the engine's valves or lifters. It is best to have a mechanic inspect your car to determine the exact cause and provide a proper solution.

The clicking noise could also be caused by a loose belt or a faulty water pump. It is recommended to have a professional inspection done to pinpoint the exact cause of the noise and prevent any potential damage to your engine.

If you recently had an oil change, it's possible that the wrong type or amount of oil was used which could lead to engine noise. Have a mechanic check the oil levels and type to ensure it is correct for your Toyota Corolla.