Here are the pics I forgot in my previous e-mail:

Hi Paul,
I started working on my fuel system today and came up with a few questions:

I'm using the stock 20B fuel rails and injectors.  I ordered O-rings for the injectors and mounted everything after cleaning thoroughly.  I've attached several pics so you can see what I'm talking about.

My first question is about the fuel pathway.  It appears that the fuel should first enter the primary fuel rail at the end which has what appears to be the pulsation damper.  It seems that the fuel will travel across the primary fuel rail feeding the primary injectors and exit on the opposite end of that fuel rail.  I've connected a fuel line from the exit of the primary fuel rail to the secondary fuel rail.  The fuel leaves the primary fuel rail and enters the secondary fuel rail at the end opposite of what appears to be the fuel pressure regulator.  I'm assuming that from the fuel pressure regulator, the fuel will return to the sump tank.  Does this sound like the proper fuel path or have I left something out?

Second Question:  On the "exit end" of the primary fuel rail there is a "sensor" of some kind.  Do you have any idea what this is?  You can see this sensor in the attached .jpg file called "fuel_rail002".

Third Question:  The stock fuel pressure regulator has a fitting for attaching a vacuum hose.  What is this for???  Can a vacuum hose be attached there and then the other end of the hose just plug directly onto any of the vacuum fittings on the intake manifold?  The Haynes Manual mentions that there is a vacuum controlled fuel pressure regulator control solenoid valve.  There is a picture on page 121 of the Haynes Manual.  Is this part required to make my regulator work properly?????

Thanks in advance!!
Sincerely,
Don Mitchell

 
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