It kinda sounds like a knocking rod but, its lighter sounding than a rod. My friend seems to think that it may be an exhaust leak from the EGR. The engine bogs down at 5k RPMS, and doesn't want to go past that. Started as a very light noise that seemed to be the timing chain, and the more I have driven it, the louder it gets. No signifigant power loss in the engine until it hits 5k. Timing chain, and guides we're replaced before I bought the car.
To me it sounds like a valve hitting the piston or something. But I have NO clue what it is, I don't want it to be a rod, and its not sounding like a typical rod knock, But this is my first nissan, and I have no clue how to do anything to these.
-40ozCasualty
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