Hey guys, I've been trying to find a DIY to change my sparkplugs on my 2007 G35 Sedan. I am planning on getting NGK. I do not want to spend $250 on changing sparkplugs, when I can get the plugs for $70 and save a lot of money on Labor. Can you tell me where I can find a DIY video or directions to switch out the plugs.

This is the closest thing I have found, its not that helpful. I need to change all 6 of them. I am about to hit 130K and I think it is about time.
http://forums.nicoclub.com/how-to-ch...7-t466365.html

I am sure this would save a lot of folks a lot of money!!! YOur help would be appreciated!

 

^ that is a great DIY, i dont understand the problem. there are 3 on each side of the motor and the procedure listed to replace one sparkplug is exactly the same for the other 5.

Take cover off, take of TB(TB removal DIY is already listed on this site under DIY section) clear out the wiring harness by removing the bolts and clips, unplug coil pack, take out the 10mm nut holding the coil pack and pull out then unscrew the plugs.

 

The DIY is quite well written and just reiterate as listed in the DIY, make sure you dont force the plugs from the block as it has aluminum heads

 

SP changes on the G is sooooo easy compared to my old Maxima and Murano where i had to literally remove the upper manifold and the entire cowl/wiper assembly to access the rear bank.

 

I got my plugs from Autozone and were $9.99 a peice and followed the DIY on the forum. Everything went perfect and only took about a hour

 

There is a great video on YouTube. I think punch in G35 Spark Plug replacement, and it is there. The key is to take your time, have the right tools, be careful when you are placing plugs back down in the head not to drop them, the gap will be compromised, put a little thread lubricant on the plug threats (only), be careful not to get any on the porcilen part of the plug, this keeps the plugs from seasing up,and last but not least, snug the plug down, DO NOT TIGHTEN!!

 

^ Or use a torque wrench and take the guessing out of the equation.

 

I wonder, does infinitihelp.com has this on there too?

 

What is the torque for the plugs BTW?

 

^ its all in the DIY posted above ... "The torque specs are 168 inch pounds or 14 foot pounds use a torque wrench so you don’t over tighten and damage threads."

 

^ off topic, but nice to see you posting regularly again.

 

^ thanks, yeah had some rough time for a while and did not feel like doing anything else, but thankfully life is slowly getting back on track! This forum really does allow for a person to leave his life behind for a few minutes and just concentrate on something else... the G!

 

Does anyone know the miles that you are supposed to change the plugs? I have an 07 sedan that's closing in on 90,000 miles.

 

I thought it was something like 110K miles or so

(it's it the book)

 

What is this book you tell of. Please share.
(here we go again)