e_schott

In my experience if it is leaking that bad its probably from the sending unit, but could be a valve cover gasket. While you can't really see the sending unit it is very easy to replace, no longer than a 10 minute job as long as you have a 3/8 universal joint and an extension to get back there and get it out.

Good idea but use the fuse taps. Jamming the wire will stress the terminals in the fuse box and could eventually cause a poor connection and high resistance Sent from my SM-G950U1 using Tapatalk

Sorry to double post, I am not in a place I can look it up trying to go off of memory, can you tell me if your truck has AFM? Look for option codes, I think the two option codes for a 6.0 in that year are LY6 and L76, the L76 being the AFM aluminum block. But do not quote me on that, I am going off of memory and I work on a LOT of these trucks. Let me know what I asked above and if you have AFM or not and I will be happy to assist. Private message me and I will give you my phone number and you can text me.

Ok, first off I'm going to scald you for pulling a head on a hunch...let's actually try to diagnose this thing without just throwing parts and making guesses. So you swapped a known good injector, coil, wire, plug, etc. That rules out the components. However, the control side of those components could have an issue. With the compression numbers that you post, that is likely not the problem however. First things first, do you have any trouble codes and do you have a scanner that can read live data. I can try to help you out if you have that. Second, what's compression like on other cylinders on that bank?