Where is cylinder #4 in a 2001 Infiniti i30?

[mujahid a]

My 2001 Infiniti has been "knocking" lately on and off and I got a check engine light on, I did a diagnostic and 2 codes came up. P0304(Cylinder 4 Misfire Detected) and P1320(Ignition Signal Primary). I realize that the reason for cylinder 4's misfire is a bad ignition coil and am looking at replacing it my self if its possible. I do have the pdf dealers manual (fsm) but am not sure what bank or side cylinder 4 is located in. Is cylinder 4 closer to the front bumper or the rear firewall/cabin? and also, I was wondering if anyone had any input on what sort of ignition coil to put in, Im finding $33 ignition coils all over the internet, whereas napa sells them for $83..is it one of those things that really make a difference or is it like a battery or something where brand doesnt make a huge difference???
Thanks

 

[jdmtz2]

Try autozone i think they have diagrams for the ignition coils,also i bought the coils at autozone and they have been working great for me.

 

[guitardc59]

cylinder #4 is the middle cylinder closest to the front of the vehicle. The ignition coils in my car started to go bad, and when I changed one, the others started to fail as well. Just a heads up, since these cars seem to have that problem. The cylinder sequence goes like this: #1 - firewall side/passenger side of vehicle #2 - radiator side/passenger side of vehicle, #3 - firewall side, middle, #4 - radiator side, middle, #5 - driver side/firewall, #6 - radiator, driver side