In the throttle body.
The fuel regulator is found need the fuel pump in a 1990 Maxima. It is right near the fuel filter on the driver's side.
the fuel rail
fuel pressure regulator is on the right end of the rail.
The fuel pressure regulator on a 1990 Geo Prizm is located in the fuel line that runs along the valve cover of the engine. It is an inline device that is no bigger than the fuel line itself.
Mounted on top and inside the fuel tank.
By doing a series of fuel pressure tests. Recommend that this is done by professionals with the proper equipment.
11 in autobahn and 14 in city
On the fuel rail. The tank return line connects to it.
It is in the throttle body.
cause its throttle body injection theres no carb on it its probly your fuel pump is gone
Replace the fuel filter.
on the fuel injector rail It will be the round piece that a vacuum hose goes to.