Fuel pressure as measured off the Schrader valve on the fuel rail should be at least 20 to 30 PSI for the 2.3 L.
The fuel pressure for an 89 Ford F250 with a 5.8L MFI is between 13 and 20 psi with the engine at idle. With the key on engine off, the gauge should read between 23 and 31 psi.
at idle 13-20 psi Key on engine off 23-31 psi
At idle 13-20 psiWith key on engine off 23-31 psi
At idle should be 13-20 psi With key on engine off should be 23-31 psi
Check fuel pump pressure Should be 15-23 with engine idling 23-31 key on engine off
At idle it should be 13-20 psiWith key on engine off it should be 23-31 psi
With engine at idle 13-20 psi With key on engine off 23-31 psi
At idle: `13-20 psi Key on engine off: 23-31 psi
At idle 13-20 psi With key on engine off 23-31 psi
At idle 13-20 psi Key on engine off 23-31 psi
At idle 17-23 psi Key on engine off 23-31 psi
13-20 psi at engine idle 23-31 psi key on engine off