You should pull the top plate off the carb and take a look in the bowl. I suspect you will find a ton of sediment blocking the jets. Take it apart, soak everthing in carb cleaner, rinse, and blow out with air.

You haven't said if you have the mechanical fuel pump. If you do, it may not be delivering enough fuel at cranking to replace the fuel that's evaporated while it sits. You can test it by unhooking the line at the carb, putting into a jar and watching for a "good spurt" while cranking. I would replace the filter on priniciple.

No idle when warm sounds like blocked idle jets, as Steve B pointed out. Another good reason to clean the carb.

Is the choke place closing completely? Do you get a squirt from the accelerator pump when cold? If so, the car should at least fire.

Have you checked the choke pull down? Unhook the dashpot and apply vacuum with a Mityvac. The choke should open 2-3mm.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe