Depending on if they are on the front or back (left or right) side of the engine. If they are on the front, you will need a small allen wrench and remove the Nissan or infiniti 3000 plate. Then unscrew the coil and replace. Very easy.
I believe number one is on the back side of the motor. You will need to remove the intake manifold (intake plenum) to get at the coils. Kind of a pain but still do-able for the DIY person. Make sure you tighten the bolts on the intake in the proper order and to the right torque specs.
I replaced one coil, with a used coil, and reset the computer and never saw any code come back. Might happen, might not. Coils are only about 60-70 dollars at the local parts store. Although its a good idea to replace them all, you can replace just one.
Thursday, June 3rd, 2010 AT 3:25 PM