I bought my 2002 Ranger 3.0 V6 about a month ago and it's had a consistent misfire on cylinder 6. I have replaced the spark plugs, spark plug wires(I wired them correctly and in the correct firing order), and Fuel injectors. I had bought another coil pack because I thought my old one was a problem but it wasn't. I have checked for a leak by disconnecting the air idle control valve and the rpm dropped below 500 like it's supposed to if there's no leak. Is there something i'm missing? I'm all out of ideas and this is my last resort.

I have already talked to a mechanic, they said the fuel injectors were the problem but I have changed them and the Code is still showing

 

Sounds like it's time for a compression test, dry and wet.