Well the running was intermittent, and the car would suddenly fail to start or die running. A little detective work quickly identified the fuel pump as the culprit. The fuel pump on this car is massive, and rides in its own carrier next to the tank in the rear. It is also not cheap ! However, a new pump instantly cures the issues.
!["230SL-00027.jpg"]("https://www.classicvelocity.com/wp-content/uploads/2012/01/230SL-00027.png")