Knocking/tapping noise between 3000 to 3500 rpm. Not at idle or above 3500. Dealer says it could be a rod bearing. Sounds more to me like a lifter noise. Only has 40k miles & not driven very hard.
Engine has a knocking/tapping sound at 3000 to 3500 rpm. on 2006 Nissan 350Z
i had the same problem.. it has to do with the oil consuption and now the engine will not start. 350z's have 60000 mil or 5yrs on waranty and i already have 68000 so iam done but tell the dealer you want a new engine they may want to work u around they just want money....