No CELs. I assumed I would get a glow plug CEL, aren't even 606 cars capable of throwing a GP code?
I did the fuel filter about 5,000 miles ago with a unit from the dealer.
I have an eBay Mercedes Carsoft scan tool like this:
Mercedes Benz Sprinter Diagnostic Scanner Tool SRS ABS Engine Icarsoft Mbii I980 | eBay
I'll see if I can get a look at rail pressure with it.
Glad I posted, I'll see what data I can come up with and post back. I appreciate your insights Greg and Iluvmils. Not as much good info out there on the CDIs yet, looking forward to learning more and more about them.