Has anyone changed there spark plugs yet themselves. Wondering how hard it Is on the 09" maxima. I was going to do my friends for him...

 

I know on many transverse mounted V6 engines it's the aft 3 plugs that are a pain to access.

Just wondering... how many miles on his 09' and why does he want his plugs changed out?

 

Has 80k ...
Popular to belief. I have changed factory plugs after 60-80k on many new cars and noticed significant wear on plugs.. At 80k it can't hurt to replace them

 

I would agree. I was thinking before 90K myself regardless of what the maint manual might say.
You can risk pulling the head threads if you leave them in too long.

 

I have changed plugs on many cars, many times I have read if plugs go past a certain mileage the plugs become harder to remove, after removing several sets of platinum/iridium plugs at or past 120k I figured it was all made up, plugs are not cheap, so I would leave them unless you have fuel/performance issues

 

It is not necessary to replace iridium-tipped

 

I changed mine at 100,000. It is a pain but if you have a few hours and like working on your own, well worth it for the satisfaction of a job well done. To tell the truth, I did NOT see any wear or detritus on my plugs at 100k and feel they could have easily gone 150-200K. Just be prepared. You may or may not want to replace the intake manifold gasket....and some hook or duck nose pliers (or a small child) is needed to attach the hoses against the firewall!!!!!

Starr is on-target. If you aren't having performance/economy issues, don't sweat it. But if you like working on your own, it is a nice project. (lots of cussing, screaming, etc)