Carburetion:

1971 220
http://www.mercedesshop.com/shopforum/showthread.php?p=988816#post988816

1972 250 - Cold start and acceleration problems
http://www.mercedesshop.com/shopforum/showthread.php?p=350150#post350150

Zenith Carb backfire after Crane installation
http://www.mercedesshop.com/shopforum/showthread.php?p=813753#post813753

Engine hesitation-4 carB talk! "Zenith 35/40 inat carburetors"
http://www.mercedesshop.com/shopforum/showthread.php?p=81440#post81440

Engine Hesitation - 3
http://www.mercedesshop.com/shopforum/showthread.php?p=76494#post76494

Carburetor Question
http://www.mercedesshop.com/shopforum/showthread.php?p=116525#post116525