Doesn't have one
on the fuel rail. Most do not have a test port. An adapter will need connected into the supply line.
The Villager does not have a test port. You need to tee into the line at the fuel filter.
There is no test port.
The Villager does not have a test port, you need to tee into the line near the fuel filter to test pressure.
There should be a fuel pressure "test" port behind the throttle body. Test the fuel pressure at the test port using a fuel pressure gauge. If the engine starts using starting fluid and doesn't start without, and the fuel pressure at the test port is normal... you have something else going on. It COULD be the injector, but don't assume until you've tested other stuff.
By the fuel pump
TBI didn't have one, you have to tap into the fuel line at the fuel filter with adapters to attach a pressure gauge. CFI has a test port in the fuel line on top, in back of the engine.
Attach a fuel pressure gauge to the service port on the fuel rail.
It doesn't have a test port. You have to fabricate fittings to tap into the fuel line at the fuel filter to connect a fuel pressure gauge. They probably sell a kit to do that but I made my own.
Fuel pressure test.
It doesn't have one. To test the fuel pressure an adapter has to be installed between a fitting at the fuel filter and the fuel filter, preferably the fitting feeding into the filter from the pump.
There is no fuel pressure test port on an 02 focus. The computer controls the fuel pressure on these and as such the factory approved method of monitoring fuel pressure is to watch the PID on your scan tool. They do make one that can be added on though between the fuel line and the fuel rail. A quick google search should yield plenty of results to help find one.