Thanks a lot! I am planning to do my 60K service very soon and this is one of the DIYs I am looking for.

 

im pretty sure the plugs are rated for 100k miles but sure

 

I just purchased 6 plugs Denso FXE20HR11. I noticed that you used FXE24HR11's. Are the FXE20's the correct plug for the 2008 G37S?

 

Read the spark plug gap on the box they came in with, the stock gap is 1.1 (0.043). The FXE24HR11 are the OEM recommended spark plugs for our cars. If the gaps are the same the FXE20HR11 are probably the non Nissan boxed/branded plugs.

 

I purchased these at the Auto Parts Wirehouse for $68.00. It seem's that they will be fine. Thanks for your feedback.

The gap is 1.1
Plug Type: Performance
Thread Diameter: 14mm
Resistor: Yes
Hex Size: 14mm
Technical Information about FXE20HR-11

 

I am looking through the FSM and there is no torque rating. Where did you get see 14 ft-lbs on em-16?

Update: Found the torque information on the Diagram on EM-15 19.6 Nm (14ft-lbs)

 

Just an FYI. I used a 5/16 dia. X 1/8 rare earth magnet taped (for security) on the end of a 3/8 drill bit to remove the plug. I also used it to place the plug back in the hole and started it with make shift tool.

 

OP is right, never use anti-seize on spark plugs. this causes a difference in torque values when it heats up and you run the risk of snaping the plug when taking it out...

do a google search on it, ngk says it on their own website

http://www.ngksparkplugs.com/pdf/tb-...1antisieze.pdf

 

Thanks for the diy thread, just changed mine. What a difference!

 

Thanks, good write up !

 

sorry to bring this thread back but wanted to confirmed the torque for the plugs.


your write up said 18 ft lbs but post #21 (Huc) said 14 ft lbs.


please confirm. thanks in advance.

 

Has anyone found the 14mm spark plug socket in a local store or online? I found some 12 point sockets online, but no 6 point sockets.

 

I think huc's numbers are out of the FSM i just looked at a general chart on the net.

go to Harbor freight and just buy the spark plug removal tool set. iIt will have everything you need or just use a deep chrome 14mm socket like I did.

 

Yup, change them plugs y'all. This was at 69,500.

 

Your old plug doesn't look too bad, the light-ish brown isn't a bad thing.