Im having a VERY similar issue with my 87 Westy Automatic. I was thinking
it was bad fuel at first and now I'm thinking the fuel filter needs
changing. I am very curious to see which hose it is thats disconnected on
yours to see if that helps with mine! hehe.

Thanks.... I'll be keeping an eye out for a resolution as Im sure others
have had the same problems.

Abel.

On Wed, Jun 4, 2014 at 6:57 AM, Robert Clemmer <n51219@comcast.net> wrote:

> Ok, to riddle me this.  A month ago I was preparing for another 1,200 mile
> trip to SW FL and giving the car a "once over".  I'm poking around the
> engine and I find the vacuum hose to the fuel pressure regulator
> disconnected. How long it was disconnected, I'll never know.  I look around
> and push it back on a nipple on the bottom of the intake manifold.  Almost
> immediately I notice the car hesitates/stumbles for about 2-3 seconds when
> coming off idle.  That's a long time when pulling out into traffic from a
> stop sign.  It almost like the old carbureted days when the accelerator
> pump
> didn't work and it went lean after the throttle was opened until the jets
> caught up the drop in vacuum. Once going it drives normal in every way.
> 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.
>
>
>
> Any ideas as to what is going on here?  Is there any long term harm to
> leaving this vacuum line off?  Car is a young 91 2.1 wbx automatic.
>
>
>
> BobC
>
> Perkasie, PA
>