Yes, there is a cold-start valve. It's up on the front driver's side near the valve cover.

The airflow meter is obvious as day once the air cleaner is removed. Remove the air cleaner cover and look in the hole. The big metal flap is the airflow meter. The airflow of the engine running pulls it down, and its deflection adjusts the fuel rate.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

Okay that just validated what I thought. I jumpered the pins and had the fuel pumps running full time. when I pushed on the plate there was no chirping and however I had some sound of fuel trickling into the manifold. I suspect there is not fuel out of the injector lines, but I will check that next week when I get back from work.
Thank you much for your suggestions. I will update.