I just bought an 89 MB 560SL. It's in great shape but the engine has a
bit of trouble for about a minute after I start it. It idles a bit
slower than it should, sort of ready to stall. If I touch the gas
pedal, it stalls right away. If I wait about 30 seconds to a minute, I
can feather the gas lightly to get it going. After a few minutes,
everything is fine. The problem occurs only right after starting the
car, even during this hot Phoenix summer.
FYI I am not currently using premium gas, but I did try it and it
didn't seem to make much difference.
Thanks a lot