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Re: Ford E350 2005 5.4L P0191 P0452
Posted to Technical Discussion Forum on 1/10/2013

Patricio

The pressure reading using a scanner is about 45 Lbs if you can tap into the fuel rail at the Schrader valve with a manual gauge. I don't remember if their is a fuel pressure regulator in that year. In the older Fords a bad regulator would cause th... Login to read more.