Many times dealers don't like 20 year old cars. And in fact unless they have a technician who worked on MB's 20 years ago they don't know how to test & fix them.

You need to have someone start with basics. Of course fuel pressure is one of the most important issues.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator