With the engine running for the fuel pressure regulator test  right ?
I had assumed so,. reading your post.
there won't be vacuum on the vac. hose to the FP regulator if the engine
isn't running of course.

On 8/19/2012 11:57 AM, Rocket J Squirrel wrote:
> Excellent question. The two tests were done separately.
>
> --
> Jack "Rocket j Squirrel" Elliott
> 1984 Westfalia, auto trans,
> Bend, Ore.
>
> On 08/19/2012 11:31 AM, mark drillock wrote:
>>
>>
>> Rocket J Squirrel wrote:
>>>
>>> Fuel Pump Delivery Rate test (Bentley 20.19):
>>>
>>> Minimum volume in 30 seconds spec: 500mL, measured: 750mL PASS
>>>
>>
>> What this done while you were measuring fuel pressure?
>>
>> The pump must be working against normal fuel pressure conditions when
>> its output is measured.
>> ...............................
>>
>>
>>> Fuel Pressure Regulator test (Bentley 24.25):
>>>
>>> With vacuum hose (2) connected spec: approx 2.0 bar, measured: 2.2 bar
>>> PASS
>>> With vacuum hose (2) DISconnected spec: approx 2.5 bar, measured: 2.2
>>> bar HUH?
>>>
>>> The pressure did not change with the vacuum hose connected or
>>> disconnected.
>>>
>>
>> This indicates a problem. It could be that the vacuum lines are not
>> connected properly. Or the engine has a serious vacuum leak. Did the
>> engine speed change when you unplugged the vacuum hose for the test?
>>
>> The next mechanics test for the regulator would be a vacuum hand pump
>> connected to the vacuum port on the reg. Then test fuel pressure before
>> and after manually applying a reasonable known vacuum pressure to the
>> regulator vacuum connection.
>>
>> Mark
>