Engine Noise
After reading thru the link, you are scaring me with all this engine replacement talk, especially since my 2003 FX35 has the same low rpm noise and is well out of warranty. Using a mechanic's stethoscope, I can isolate the noise down to the valvetrain on the exhaust side. I'm going to pull it apart to take a look. Well, I might first talk to a friend who works for Nissan.
Dave