If you have spark to the spark plug, the fuel injector may be at fault.
If you have spark on #4 it is probably a faulty fuel injector.
Run a compression test on #2 cylinder. You either have a burnt valve or cracked head.
Possible failed injector.
on the number 1 injector
firewall side, closest to the drivers side. Don't rule out a bad injector, replace quite a few on nissans, espically when mileage gets up around 100k. does the injector click when the car is running? You can usually put a long thin screwdriver on the injector with the enging running and put the screwdriver against your ear and hear it. Even if it's firing electrically, it may not be working mechanically, the pintle inside not opening to allow fuel to flow. Do you have power to the ignition coil? What shape are the plugs in? Best to do some checking before just replacing the coil, it could be several things preventing that cyl. from firing. hgope it helps.
You need to check compression on #6.
Fuel injector number two circuit malfunction.Fuel injector number two circuit malfunction.
The third injector from the radiator.
the number 1 fuel injector is at the front of the engine towards the fire wall
injector curcuit malfunction, then tells cylinder number. po200 to po206,
what is the firing order of 10pd1