It depends on what year the vehicle is.
43 PSI with engine at Idle with Fuel Regulator vacuum line disconnected and plugged.
The fuel pressure regulator would be located under the upper intake manifold. It is attached to the bank of injector poppets (aka the Spider). The upper intake manifold has to be removed to gain access to it.
FUEL PRESSURE:Ignition ON Engine OFF40.5 to 47.0 psiWith Regulator Vacuum Applied [1]3.0 - 10.0 psi Less than Ignition ON Engine OFF
The fuel pressure regulator on that 94 Chevy V6 is in the throttle body.
the regulator is in the gas tank
what's the pis of the 1990 v6 isuzu pickup fuel pump
Fuel pressure can range from 39 PSI to 52 PSI in a properly operating system.
36.5 psi
To test the fuel pressure regulator on a 1991 Toyota 4Runner V6, first, relieve the fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls. Next, connect a fuel pressure gauge to the fuel rail's test port. Start the engine, and observe the pressure reading; it should be within the manufacturer's specifications (typically around 30-40 psi). If the pressure is too low or fluctuates significantly, the fuel pressure regulator may be faulty and should be replaced.
60 to 66 psi, engine off, fuel pump running.
V6 is 40 psi, four cylinder is 15 psi.
The fuel pressure regulator is located on the fuel rail of the vehicle. It should be on the head closest to the front of the vehicle.