pressure regulator

[tnyarbro]

think i found my problem i took the pressure reg. off still hooked up to the fuel line an vac. line try to start no fuel my question is how do they work o yea this is fi

[packrat427]

If you cranked the engine over ,and had no fuel ,My guess would be that the fuel pump is not working . The fuel pump only will start as you crank the engine,it will not pump just by turning the key on.
The fuel pump access door is under the rear seat ,fold it up and forward ,pull the carpet forward where it splits ,and there is a little door on the floor . the fuel pump is under there. When you take the door off ,you may find a broken or a loose connection . Have someone crank it over while you tap on top of the pump where it go's into the tank ,the pump mat start with a little help. This may help identify that the pump is bad , and not a relay.

[mattswabb]

i have a 1992 ford festiva ran hot and warped the head. had the head reworked put it back together car wont start i have good spark have fuel at the pressure reg. checked all wiring ground- air flow-connections. used starting fluid car ran great is the problem pressure reg. or injectors??????

1st off you should have posted this under your original post so people know what you are talking about.

So do you have pressure before the regulator?

[tnyarbro]

pressure regulator

i have gas at the pressure regulator not going through it does this work off a vacuum or absent vacuum

[mechanicaldj]

this is what your fuel pressure regulator does:

Fuel Pressure Regulator

The pressure regulator is mounted to the return line end of the fuel rail. It is controlled by manifold vacuum and will always maintain fuel pressure at a constant 250 kPa (36.3 psi) above intake manifold pressure. When intake manifold vacuum is low (fuel demand high) spring pressure inside the regulator causes the valve to partially close, which increases fuel pressure in the fuel rail. When intake manifold vacuum is high (fuel demand low), vacuum acting on the diaphragm compresses the spring, opening the valve further. Return fuel flow increases, resulting in lower fuel pressure in the fuel rail.

your problem sounds like a connection to your fuel injectors or the injectors themselves