Do you know if the fuel pump has like a check valve or does it use the pump to store pressure? I guess better yet what holds the pressure?
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91 ranger 4.0l with 92 explorer ecm
- Thread starter Bodie1991/4.0
- Start date
bobbywalter
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yup...lil check ball dealio.
so there could be a restriction causing a volume issue under load.
so there could be a restriction causing a volume issue under load.
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The fuel pump pressurizes the fuel rail, the pressure is maintained by the fuel pressure regulator.
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