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There is no schrader valve, you need to source an adapter to place between where the fuel line attaches to the intake manifold.
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.
I believe this question is related to fuel pump pressure testing...... these test are done by scanning ecu
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.
on the fuel rail. Most do not have a test port. An adapter will need connected into the supply line.
By the fuel pump
Doesn't have one
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.