I suspect lifter tick?

[Lev_96_240sx]

So my SR has developed an interesting noise. Doesn't do it at idle at all only when you get into the throttle.

Here's a vid of what it sounds like. No, it's not my car, it's not a Nissan, but it sounds exactly like mine.

http://www.youtube.com/watch?v=4wPA_ctneJw

I'll try to get a vid of mine up at some point too. Any thoughts as to what's causing this?

[Lev_96_240sx]

Come on guys, surely one of you has heard this noise before. I really am lost as to what could be causing this and I'm in no way shape or form comfortable with the way my engine sounds right now.

[lightsout]

im not an online mechanic, but it sounds like a broken hydraulic lifer. when the hydraulic shifters break, you hear the lifter bottom out b/c the internals don't work.

[Lev_96_240sx]

Could it be low oil pressure? If so how do I check for that? I don't have a gauge.

[Lev_96_240sx]

Update: I pulled the valve cover and everything is well coated in oil.

[Lev_96_240sx]

Ok finally got outside to record what the engine sounds like. So far what I've seen is a post-cat exhaust leak, a vacuum leak of some sort that I can't find, and it started smoking around the turbo.

http://s272.photobucket.com/al...6.flv

edit: forgot to post the video link.