2005+ Spark Plug Change Question?

cps · Apr 4, 2009

I am changing the spark plugs on my 2005 Nismo 4.0L this weekend and I have a couple of questions about torque. Does anyone know the torque specifications on the UPPER intake manifold bolts (6 of them I believe)? The upper intake manifold HAS to come off to do the passenger side spark plugs! Also, since we have aluminum heads, does anyone know the torque specifications for the spark plugs? I will also be changing the PCV VALVE out when I take the upper intake manifold off because it is located on the passenger side valve cover all the way in the back (and it is threaded in)!

Thanks for all of your help!

smizwhiz · Apr 4, 2009

Spark plug torque is 18 ft-lbs.

Manifold nut/bolt torque is 8 ft-lbs. There should be 7 of them.

cps · Apr 4, 2009

Thank you, just finished spark plugs and PCV valve

Just wanted to say thank you for the torque specs. I just finished the spark plugs and the PCV valve (2.5 hrs cause I took my time). The PCV valve was a pain in the butt to get to, then on top of that, it is thread on and no wrench fits it so you have to use a medium adjustable wrench. The rear brake hose vacuum line and the fuel injection electrical connector were also a pain because of the location (all the way in the back). Just as I figured there was no anti seize on the OEM spark plugs, but I made sure to put it on the new plugs. Here are the OEM part numbers for the NISSAN parts I used.

Plugs: 22401-5M015 (Qty 6)-----$7.59 each

PCV Valve: 11810-EA200 (Qty 1)-----$8.66

Found these GREAT prices on Parts.com - For every part of your life! It is a great website and the prices are about 30% cheaper than your local dealership.

Thanks again my fellow Texan!

2005+ Spark Plug Change Question?

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