Why is my Nissan Navara's engine making a strange noise?

Recently, I've noticed that my Nissan Navara's engine has been making a strange noise. It's not a constant noise, but I can hear it when I accelerate or decelerate. What could be causing this and should I be concerned?

It's possible that your engine is making a knocking noise, which could indicate a faulty valve or bearing. I would recommend taking your Nissan Navara to a mechanic for a diagnostic test to determine the exact cause of the noise.

Another possible cause could be a loose or damaged belt, which can make a whining or squealing noise. Check the condition of your belts and replace them if necessary. However, if the noise persists, it's best to consult a professional.