Idle noise
Idle noise
I know there are posts on here about knocking noises and such, BUt they all say the noise goes away after is warms up or. The noise, sounds like a quiet deisel is at idle, when its cold/hot, it dont matter it is always there but only at idle.
You will probably get an answer in the V8 Engine section. My guess is you have a loose valve, the tick is just the excess clearance. Try to isolate where the noise is using a mechanic stethoscope (best) or a piece of hose held up to your ear. If it sounds like it is under the valve cover, it is probably the valve clearance.


