[MBZ] Blue Bomber running

[Luther Gulseth]

Started it tonight after work.  It sounds like something is loose  
somewhere, a metal on metal knocking sound.  I reved it up to around  
2300rpm and the noise went away, and it sounds like a finely tuned MB  
diesel.  What knocking sounds might be present in the sub 1200rpm range  
that go away above that?  I recorded the sound, so I can send it out if  
the sight/sound will help.

--
Luther   KB5QHU
Alma, Ark
'83 300SD (231,xxx kmi)
'82 300CD (158,xxx kmi)
'90 300E & '82 300D (parts or run?)