No banjo bolt, but there is a line you should check out. It's the hose coming off of the intake manifold, on the driver's side, that goes to a little switchover valve.

I cleaned the valve out with brake cleaner, soot shot out the other end..also used a wire to clear the opening that the line connects to on the manifold.

If yours is clogged, you're in for a surprise!

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Dan
2005 E320 CDI - 246k
1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k
Past: 1987 300D - 264k