If the fuel pressure regulator diaphragm is broken, it's possible fuel
could be leaking past the diaphragm.

With regulator removed, shake it to see if any fuel is in it, maybe
let it dry out for a while? If no fuel is present, gently mouth
suck-push on the vacuum nipple. If you can pull air through, the
diaphragm in the regulator is most likely broken.

Then again, someone may have disconnected the vacuum hose to regulator
in an attempt to solve other running issues. OR, the hose became
disconnected and other parts on the engine were adjusted to
unknowingly accommodate this.

Neil.

On 6/4/14, Robert Clemmer <n51219@comcast.net> wrote:

> Nothing has changed.  Fuel mileage is that same as it has ever been.  Three
> weeks later, I have enough of this and I disconnected the vacuum line and
> drivability goes back to normal.

--
Neil n

Blog: tubaneil.blogspot.ca

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'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG *Gas* inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej