Why is your 90 Mazda mx6 making a ticking noise?

A ticking noise in your 1990 Mazda MX-6 could be caused by several issues, such as low oil levels, which can lead to insufficient lubrication of the engine components. It might also indicate a problem with the valve lifters, which can become noisy if they're worn or not functioning properly. Additionally, a ticking sound could stem from an exhaust leak or a loose heat shield. It's best to have a mechanic diagnose the issue to prevent potential damage.