Well, the new injectors (including the cold start injector), did not improve cold starting a bit, and low idle is still there.
I had the engine on the scope at MB dealer. Paid $550.00 of diagnostic time at the dealer for nothing.
I have the fuel accumulator and fuel line check valve on order ( to be installed Friday.) The check valve has been replaced a few weeks ago but maybe, just maybe, it could also be deffective.
Why did Mercedes built such a complex fuel management system?
I had some fuel management problems with my old Vette last year. I ordered a new Edlebrock Q-Jet carburator for less than $200.00, used a 1/2in. wrench and the problem was solved in an hour. I guess the german do not beleive in the KISS system....
Thanks for your help. I'll report on the results
JackD