So, I've been getting a P0306 code, miss fire detected on #6 cylinder. It was due time for plugs, wires, cap, and rotor. So I did all of that. Engine starts and runs fine. Code came back. I figures to move on to the fuel system. Replaced the fuel injectors (270,000 miles and I think they were original) and put a noid light to the #6 . Noid light test showed the circuit working just fine. Well code came back. Tried moving the fuel injectors around to see if maybe I got a bad one. Nope, code came back on #6 . So I ask, am I missing something here?