Originally Posted by GRIESL

You're running regular old diesel in there, right? Ever put veggie in the tank? Heat would definitely have an effect on how that is injected. Anyway, filters in good shape? I realize I'm way out of my league with you fancy Benz owners (mine's a 617, 85 vintage), but does that thing have a rack damper?

Prior to head replacement (yeah, I know, this story is starting off bad) my 617 would crank up well in 32F+ and idle better cold and hot as opposed to mid temp. My theory, cold is when the oil is thicker and gives a little extra compression. Hot is when the rings are expanding and add better atomization with heat, and you've got a little higher compression and smoother idle. Mid temp, neither one is helping.

Like Brian suggested, starting with injectors is a good idea. But maybe you've got slightly low compression, possibly due to a valve not seating properly. Again, I'm way out of my league here speaking to an SDL owner, so I don't even know if your valves require adjustment. But I wish you luck. There ain't nothing better than a good running diesel Benz.

BTW, I'm from the Crescent City. How's the weather? Hot as hell yet? I really miss drinking beer and sucking crawfish heads at Cooter Browns!