The bolt that is 22m is under the EGR block. The 2 hex nuts are on the engine side of the block that the EGR attaches to. The lower bolt just caused a exhaust leak sound. The other two hex bolts being loose caused all the other issues.

Originally Posted by
JHarris1385
So this screw is directly underneath the egr? I think this is my problem too. My truck if not normally supposed to sound like this, sounds more diesel iv noticed......
"You can live your life in a thousand ways,
but it all comes down to that single day,
when you realize what you regret,
but you cant relaim and you cant forget."
----Trans Siberian Orchestra