Unfortunately that system doesn't have a test port so you have to tap into the fuel line at the fuel filter in order to install a fuel pressure gauge. It will require adapters, hoses and the fuel pressure gauge. Once you have a gauge installed, with engine off, you cycle the ignition key on and off several times until the pressure has peaked, it should read between 41 to 47 psi.
Where is the fuel pump fuse and relay on 1994 BMW 525i and how can I test to see why my fuel pump won't work
To check the fuel pump relay on a 1994 Toyota pickup, first locate the relay in the fuse box, typically found under the dashboard or in the engine compartment. Remove the relay and inspect it for any signs of damage or corrosion. You can test the relay using a multimeter to check for continuity; if it doesn’t show continuity when energized, it likely needs replacement. Additionally, you can swap it with another relay of the same type in the fuse box to see if the fuel pump activates.
To check the fuel pump on a 1988 Toyota pickup, first ensure the ignition is off and locate the fuel pump relay in the fuse box. You can test the pump by bypassing the relay with a jumper wire to see if the pump activates. Additionally, listen for the pump's humming sound when the ignition is turned to the "ON" position (without starting the engine). If there are no sounds or fuel pressure at the fuel rail, the pump may need to be replaced.
Have a fuel pressure test done. A 4.3L should have 60 to 66 psi, a 2.2L should have 41 to 47 psi.
Fuel pressure test. First thing to do is replace the fuel filter. If that does not help, then test the fuel pump with a fuel pressure tester. If you can't hear it run for a few seconds when the key is turned on, either the pump is bad, or the fuse is blown, or the fuel pump relay is defective. Even if you hear it running, it may be so weak as not to work properly.
Test volts to the pump. Shake wires and test again.Maybe a bad connection.
Check your fuel pump and fuel injectors. Have a fuel pressure and flow test done.
Fuel pump pressure test.
start the car, rev to 5500, if it sputters going up, not enough fuel pressure
I would suspect fuel delivery problems. Start with replacing the fuel filter. If it still has trouble have a fuel pressure test done to test the fuel pump and fuel pressure regulator.
You can backyard mechanic test it by removing the fuel line from the carb and crank it over, if fuel pumps out the line,the pump would seem ok. The manner in which the fuel pumps is critical, it must pump with some pressure not just ooz out.Be careful where the fuel spills also to keep safe.
To replace the fuel pump on a 1994 Saturn, first, disconnect the negative battery cable to ensure safety. Then, relieve the fuel system pressure, remove the fuel tank, and disconnect the fuel lines and electrical connectors from the pump. Replace the old pump with the new one, reassemble the fuel tank, and reconnect all lines and the battery. Finally, check for leaks and test the system before driving.