Is there a schrader type fuel pressure tap on the 3.0 2005 Ford Five Hundred? If so, where is it?

 

Should be on rear of fuel rail , passenger side of vehicle. There is a fuel rail pressure sensor that controls fuel pump operation depending on fuel demand so if the engine is idling it may not need as much fuel as if taking off or pulling a hill. Be careful before condemning fuel pump just because pressure appears low.

 

Can't find it on fuel rail, only the fuel pressure sensor. I do see this towards rear of engine that has a schrader valve in it with green over. What is this.

 

That is a part of the evap system which controls gasoline vapor emissions , has nothing to do with fuel other than keep vapors from going out into the atmosphere.

 

Hanky Thanks for the info on this part. Wonder why there is a schrader valve under the green cap?

 

Need to ask again. I don't see a fuel pressure test port on fuel rail. Anyone know if the 2005 five hundred has one?

 

Chilton book says that some models are equipped with fuel pressure test port. It just says locate it on the fuel rail.
Models without a test port: Relieve fuel pressure . Disconnect fuel supply line at the fuel rail , then use adapter to connect the fuel pressure gauge between the fuel line and the fuel rail. After checking pressure , relieve fuel pressure and reconnect the line.


Why didn't ford put the test port on all models!?

 

I don't know the answer to that, but you can bet $$$$$ was involved.