I was painting some trimming for my new house in the garage. I had just finished so I decided to take my Z for a spin. I gave it a little speed and I heard this whining sound Later I realized I was going 20 in a 45 so then I quickly accelerated to 45. It happened again. I pulled into a parking lot and popped the hood. there was a ticking sound almost like a belt or just the pistons. Anybody know what this might be? I'm not sure if I'm just hearing stuff from all the paint fumes I inhaled , but I know for sure the ticking noise is real.

 

Every car I own is new/very low miles so I've never dealt with this before so please don't flame.

 

More information is always better. How many miles on the car?

 

out of all my cars my z has the most with just now 40k

 

Most of these cars don't idle quietly from what I've seen. A ticking noise is probably a lifter tick (check your oil), the timing chain, an exhaust leak, or a spun bearing. The spun bearing would be pretty loud and obvious when revving. I would imagine that anything serious would result in a check engine light. Check the oil and see if it's full if you haven't already.

 

What should your oil pressure be when just sitting there?

 

A little lower then 30 psi if I'm not mistaken