1993 Mercedes Benz 300se warm starts

INTERNAL LEAKAGE OF THE FUEL PRESSURE REGULATOR TECHNICAL SERVICE BULLETIN Reference Number(s): DTB 15/96-3; MB-NET 290, Â Date of Issue: Â August 1, 1996 Related Ref Number(s): DTB 15/96-3; MB-NET 290 ARTICLE BEGINNING SUBJECT DEALER TECHNICAL BULLETIN 15/96 SERVICE INFORMATION 15/96-1 RECALLS AND SERVICE CAMPAIGNS: WHEN REPAIRING ANY CAR, ALWAYS CHECK THE VEHICLE MASTER INQUIRY FOR OPEN CAMPAIGNS 15/96-3 GROUP 07 - ENGINES M111, M104, M119 AND M120: For conditions of hard starting, engine running rough and/or surging at idle; we have found the cause to be internal leakage of the fuel pressure regulator, part no. 000 078 15 89 (Brumme) production code 06.95 and 12.95, through the membrane. To remedy this condition, replace the fuel pressure regulator with part no. 000 078 18 89 (Bosch). For warranty processing use Damage Code 0726204. MERCEDES-BENZ: Engines M111, M104, M119 and M120 GROUP: 07 - Mixture formation
This is an MB tech bulliten, have fuel system tested.