Hey Guys,
Just an update. The rattle has remained and I have just been dealing with it for the past year. I have since moved and decided to mention it to my new Nissan Service dept. I sent them the audio clip and they think it is spark knock. From what I have read this seems to be pretty harmful to the engine. Anyone familiar with Spark Knock. Any suggestions on a fix. The new Nissan dealership said I should have them do a fule system cleaning to remove carbon buildup. I currently have 57k but remember my car has done this since 30k when I bought it.
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