I am making a new thread on this even though I have another, but I figured this would be better so people didn't get sidetracked by the other info posted before
Ok about a month ago this noise started but I was never able to pinpoint it. After doing a full tune up which included replacement of most of my pulleys it's the only noise left so now I found it.
The ticking is coming from the front valve cover. This starts after the car get to operating temp but then gets loudest after a 15+ mile highway drive. It also only happens in park when revving if it does it underlies it must be a lot quiter as I can't hear it then.
Now tonight I notice that if I rev the car to 2k rpm the noise starts but if I hold it there is stops after a second or so. It does the same when I increase the speed to 3k, and so on.
Now I'm not much of a mechanic so this is where you come in. What are your thoughts. It seems dependent on oil pressure which makes since why I don't hear it under load or when I hold the rpm steady. Could it be the oil pump? A bad lifter? Worse?
Here is a video it's not very noticeable without good speakers.this is it at its loudest.
http://www.youtube.com/watch?v=hqEFfrRq1G8&sns=em
