Postby smj999smj » Sat Jul 18, 2015 9:00 pm
Sounds like the person at your Nissan dealer doesn't know what he's talking about! As mentioned, it has three timing chains and there is no service interval for replacement. As far as things to look out for...
Look for rot and rust at the bottom of the front strut towers. There is a recall for this issue, so make sure it's been done.
Worn bushings in the rear suspension upper and/or lower links are common and make the vehicle sway all over the road when they are bad. The links aren't difficult to replace, but it's not uncommon to have the bolts seize to the metal sleeve in the center of the bushing, requiring them to be cut out.
There have been some that have had the screws fall out of the swirl valves inside the intake and fall unto the top of the valve, or worse, into the combustion chamber. This was due to not enough thread locker put on the bolt threads during assembly. I've heard it occur on more '01 models than '02 and later, but be mindful of it.
Check engine light issues were a bit more common on these VQ35DE engines than were on the previous VG33E engines. It's not uncommon to see a check engine light come on for a bad oxygen sensor or for the intake valve timing control system. Ignition coil pack failure is also not uncommon.