Quote:
Originally Posted by Mike D
Since the pressure is created by the regulator causing restriction, almost any of the aftermarket fuel injection pumps should work. It all depends on the fittings of course. I believe somebody here on the board mentioned using a pump from a VW or BMW. Sacrilege, yes I know but sometimes ya gotta do what ya gotta do.
Where is the regulator mounted in the existing fuel system?
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The injection on the W108 6-cylinder develops injection pressure in the mechanical injection pump, like a diesel. It requires a low-pressure, approx (12 - 16 psi) high-volume supply pump. My FSM doesn't show an external separate pressure regulator on these.
Except for the BMW 2002tii, all the BMWs, VWs and Mercedes 3.5/4.5 V8s have Electronic or CIS injection systems, requiring high-pressure (approx 60 psi) lower volume pumps. I've heard it's possible to swap the electric fuel pumps on those.
Happy Motoring, Mark