I say it's the master cylinder.  Had the same issue with my 91 Gl.  A new
master cylinder solved the issue.

Jim
Wilmington, NC

On Sun, Aug 9, 2009 at 7:55 PM, Gilles H Turmel
<gilles.turmel@sympatico.ca>wrote:

> A friend of mine has a 91 Wesry GL auto with a 2006 EJ25 engine. He has to
> pump the brakes at least twice to get a decent result.  Hi hydraulic fluid
> level is stable. Does he have a booster problem?  If yes can that booster be
> rebuild?
> Best regards.
>