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 |
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