I mentioned this problem in another thread a few days ago, but I figure it would easier to start a new thread for a different problem.
I get am getting a knocking noise that is hard to hear when standing over the engine, but it is very prevalent in the cab.
The first video is standing over the engine (idle has been turned down since taking video)
The second video is the from inside the cab.
Some information on the noise, it is there from the second I start it up, until I turn it off. Driving around and letting the engine heat up has no effect on noise.