Sorry for late reply.
I finally bought me a Fuel Pressure gauge with correct Banjo fitting and tested the pressure with the following results: Switch to ON
Measured 46 psi (Spec: 38 44 psi)
With vacuum hose from pressure regulator disconnected and plugged, engine started: Measured 46 psi (Spec: 38 44 psi)
Note: Keeping the vacuum hose plugged or not plugged did not make a change in readings!
Vacuum hose reconnected and engine idling: Measured 39 psi (Spec: 33 37 psi)
Engine stopped: Dropped to 21 psi and within a couple of seconds drops to about 5 psi. (Spec says that it should remain at 21 psi for 5 minutes after the engine is stopped)
Firstly, these readings are on the high end of the spec (and slightly more).
Secondly, after the engine is stopped it does not hold the 21 psi for long.
Question: Since the reading are high, does it mean the fuel pump and fuel filter are in
working properly as they should?
Monday, March 26th, 2012 AT 7:03 PM