I found this video on you tube witch relates to the same sound thats coming from my endine. Does anyone know if this is a problem with the timing chain? What causes this to happen? This sound keeps coming back to me at 3000 to 3500k miles after an oil change. I check my oil level and its fine. No leaks, and it doesn't burn oil, so what can it be? Any ideas, Thanks.

http://www.youtube.com/watch?v=05yBcOoHOvA

 

Most likely the cam phasors (VTC), which is normal if it quickly disappears. It may be related to the timing chain guides, but I don't know enough about them to draw that conclusion.

Does the noise go away within 5-10 seconds of a start-up, or does it persist?

http://maxima.theowensfamily.com/tsb/NTB03-060.pdf

 

It does go away within a few seconds but once i start driving i hear the noise again at around 2500 rpm then i goes away. If i stay at 2500 rpms the noise stays untill it shifts. Then the noise goes away. Also if i accelerate fast, there is no noise.

 

Has anyone encounter this situation with a solution? I would love to get this issue fixed soon.