Besides the fuel pressure regulator it could be bad or clogged fuel
injectors. I'd suggest using one can or 2 of fuel injector cleaner on half
a gas tank (LiquiMoly, Chevron or Seafoam) to see if there's any change.

On Tue, Aug 25, 2020 at 7:43 AM Vanagon Man <t3vanagon@gmail.com> wrote:

> I don’t, and no.
> That would be a good spare to have on hand, regardless...
>
> > On Aug 25, 2020, at 8:39 AM, Dan N <dn92610@gmail.com> wrote:
> >
> > 
> > Do you know how old the fuel pressure regulator is? Do you have a spare
> one to swap it in for testing?
>