SL 1993 R
Founding Member
carb would be my guess.. see if can find someone who has a similar setup, and see if you can borrow parts of their car for the day to try and figure out what is wrong with yours... lot of work, but it would be a way to avoid spending money on parts that did not need replacing. For the rust in the line suggestions, get a cheap glass in line filter, and you will be able to easily see if this is a problem..