It does. The bung is welded into the driver's side exhaust. I checked mine (quickly) and the bolts to the bung were tight. I also took an inspection camera and look at the weld as best as I could to see it and I didn't see any cracks. I'm curious how your inspection goes Vetalbig.

I also replaced the upstream O2 sensor since I had replaced the downstream on Bank 1. Been driving it for about a week and no change. I don't have an IIDTool so I disconnected the battery leads and shorted them to clear the learned maps (I really still don't know if this really works).

Next steps, I need to get my hands on a fuel pressure gage and check to see what it looks like at idle and at higher RPM. I'm also going to swap injectors from bank1 to bank2. If that doesn't correct it- I'm really not sure what will be next. The truck is still running like a top. Although my hwy mileage is down around 19 or so now. Not sure if that's due to colder weather or winter-mix fuel or what. So, still fighting this one.

 

 

 

I was hoping you would chime in soon Vetalbig. It just may be the solution but I still don't understand why other codes weren't present here more directed at a failing cat (P0420 Catalyst System Efficiency Below Threshold is the one that I really thought would have popped). I appreciate you staying with this thread and not throwing in the towel. Hopefully this does it for you, and if it does - I guess I'll follow down that path. Good luck and fingers crossed.

 

 

 

 

 

 

60 lbs, straight BG. The vehicle will run on it. Remove the fuel pump relay.

It takes about 12-14 min for one can.