Manually adjusting fuel pressure in a 300E??
As a last ditch effort to try and put an end to my car's hesitation problem, I came upon a thread that dealt with removing the EHA and turnig a screw to adjust the fuel pressure. My details are a little sketchy, and I wanted to know if anyone had pictures and/or the specifics on how to adjust the EHA??
My car hesitates from a standstill, but the hestitation is gone above 1500rpm, If I am trying to pass at about 45mph, the hesitation will show up. I am almost certain that this is a fuel pressure problem since I have replaced a lot of parts
-new vacuum lines
-new vacuum sensor on top of engine(has 2 vacuum lines coming out of it)
-New coolant temp sensor
-new aux fan temp sensor
-new gas cap
-New fuel sending unit
-Cleaned idle control valve
-new 02 sensor
-fuel mixture was corrected to spec
-cleaned all electrical connections
-new air filter
-replaced #5 and #6 injector
-cleaned throttle plate
-new aux fan
-spent lots of $$$ on Techron
-Spent lots of $$$ on diagnostics
Does anyone know if the 1987 300E has manually adjustable fuel pressure?
If so, can someone provide instructions on how to adjust it?
Its worth a shot to try it.
1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
Monochromatic Paint (Custom Blue)
Flat Badged (front)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS