If you replaced the suspect pressure regulator with a "known good"
regulator, but nothing changed, then I'd guess the problem isn't your
fuel pressure regulator.  The first thing I'd do is to put a fuel pressure
guage on the fuel ring and run through the diagnostics.  Maybe the
problem is on the other end, at the fuel pump?

From: "Michael S. Nichols" <msnichols@MINDSPRING.COM>
Sent: Thursday, March 09, 2000 6:58 AM
Subject: Fuel Injection Pressure Regulator on '81 aircooled

> My symptom:  I put key in ignition, turn to activate fuel pump,
> and I hear and can feel fuel going through the Pressure Regulator.
> I replaced it with another, and fuel pump continues to run and fuel
> continues to flow unabated through the reg. as before. Van will start,
> run for few minutes, then stall, and fuel pressure and fuel pump continue
> to cycle fuel.  My good '81 Pressure Regulator valve and fuel pump do
> not act like this.   I have my Bentley out on my desk...
> Questions:  What is the problem?  How do I fix this problem?
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Tom Young                  tomyoung1@home.com
Lafayette, CA 94549    '81 Vanagon
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