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