Would a bad exhaust manifold also cause ticking like lifter if needed replacement?

A bad exhaust manifold is unlikely to cause a ticking sound that mimics a lifter tick. A failing exhaust manifold typically makes a different kind of noise. You'll more likely hear:

* Exhaust leaks: A hissing or whooshing sound, often more noticeable when accelerating or under load. The location of the leak will influence where the sound comes from.

* Rattling or knocking: If the manifold is cracked or broken, you might hear a metallic rattling or knocking sound, especially when the engine is running. This is different from the rhythmic, higher-pitched tick of a lifter.

A lifter tick is typically caused by:

* Worn or damaged lifters: The most common cause.

* Low oil pressure: Can lead to lifters not being properly lubricated.

* Improper valve adjustment: In engines requiring manual adjustment.

* Other internal engine issues: Such as a sticking valve.

If you're hearing a ticking that sounds like a lifter, focus your investigation on the internal engine components first. Check oil level and pressure, and consider a professional inspection if the sound persists. While a severely damaged exhaust manifold *could* create an unusual noise, it's far less likely to sound exactly like a failing lifter.