94' e320 will not start
 

I would like some information on this car. I need to know if my fuel pressure gage will fit this car? I use it on Gm cars, but was not sure if Mercedes use the same style port. Also what is the correct fuel pressure in psi? If I want to check the pf relay, is it located behind the battery? There is a black box next to a computer and a relay behind that. I asume the black box is the fp relay. What is the other relay behind the black box? Is there a way to check the ovp without just changing it? I have read some post that state they can take the ovp fuse out and the car will start. Is this true? I don't want to just start changing out parts until I find the problem. Too expensive.
Thanks JohnT

FP specs:

Normal Run 3.2-3.6 bar
With vac line to pressure regulator disconnected 3.7-4.2 bar
After 1/2 hour stand/off No less than 2.5 bar
[Bar = 14.5psi]

The fitting is on the fuel rail and is the same thread as R12 fittings. Don't know what your GM uses.
Pevious OVP info post is correct.

Re: Re: 94' e320 will not start
 

1993 300E (3.2) and 1993 300E 2.8's use the same engine management system as 1994-1995 E320's.

It is the 300CE coupes with the "early style" 3.0 liter M104 engine that used the old KE engine management system. I think it was 1990-1992 300CE's.

'93 s w/104 eng without full electronic FI were S class....