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Which regulator and what year? You have a window regulator, voltage regulator, fuel pressure regulator to name a few.
Sounds like a bad/failed water pressure regulator.
Yes
Fuel Pressure Regulator is located on the fuel rail.Fuel Pressure Regulator 1. Disconnect the negative battery cable. 2. Properly relieve the fuel system pressure. 3. Remove the air cleaner outlet tube(s). 4. Remove any necessary components to access the pressure regulator. 5. Disconnect the vacuum hose from the pressure regulator. 6. Remove the pressure regulator attaching screws. 7. Remove the pressure regulator from the fuel rail. To Install 8. Discard the O-rings on the pressure regulator and replace them with new ones. 9. Lubricate the O-rings with clean engine oil. 10. Install the regulator into the fuel rail and tighten the retaining screws. 11. Connect the vacuum hose to the regulator. 12. Install any components removed to access the regulator. 13. Install the air cleaner outlet tube(s). 14. Connect the negative battery cable.
Fuel Pressure Regulator is located on the fuel rail.Fuel Pressure Regulator 1. Disconnect the negative battery cable. 2. Properly relieve the fuel system pressure. 3. Remove the air cleaner outlet tube(s). 4. Remove any necessary components to access the pressure regulator. 5. Disconnect the vacuum hose from the pressure regulator. 6. Remove the pressure regulator attaching screws. 7. Remove the pressure regulator from the fuel rail. To Install 8. Discard the O-rings on the pressure regulator and replace them with new ones. 9. Lubricate the O-rings with clean engine oil. 10. Install the regulator into the fuel rail and tighten the retaining screws. 11. Connect the vacuum hose to the regulator. 12. Install any components removed to access the regulator. 13. Install the air cleaner outlet tube(s). 14. Connect the negative battery cable.
Fuel Pressure Regulator is located on the fuel rail.Fuel Pressure Regulator 1. Disconnect the negative battery cable. 2. Properly relieve the fuel system pressure. 3. Remove the air cleaner outlet tube(s). 4. Remove any necessary components to access the pressure regulator. 5. Disconnect the vacuum hose from the pressure regulator. 6. Remove the pressure regulator attaching screws. 7. Remove the pressure regulator from the fuel rail. To Install 8. Discard the O-rings on the pressure regulator and replace them with new ones. 9. Lubricate the O-rings with clean engine oil. 10. Install the regulator into the fuel rail and tighten the retaining screws. 11. Connect the vacuum hose to the regulator. 12. Install any components removed to access the regulator. 13. Install the air cleaner outlet tube(s). 14. Connect the negative battery cable.
Fuel Pressure Regulator is located on the fuel rail.Fuel Pressure Regulator 1. Disconnect the negative battery cable. 2. Properly relieve the fuel system pressure. 3. Remove the air cleaner outlet tube(s). 4. Remove any necessary components to access the pressure regulator. 5. Disconnect the vacuum hose from the pressure regulator. 6. Remove the pressure regulator attaching screws. 7. Remove the pressure regulator from the fuel rail. To Install 8. Discard the O-rings on the pressure regulator and replace them with new ones. 9. Lubricate the O-rings with clean engine oil. 10. Install the regulator into the fuel rail and tighten the retaining screws. 11. Connect the vacuum hose to the regulator. 12. Install any components removed to access the regulator. 13. Install the air cleaner outlet tube(s). 14. Connect the negative battery cable.
No, it uses water pressure.
Yes, because the water you are recirculating is already past the pressure regulator.
presure regulator is on the incoming cold water line
Fuel Pressure Regulator is located on the fuel rail.Fuel Pressure Regulator1. Disconnect the negative battery cable.2. Properly relieve the fuel system pressure.3. Remove the air cleaner outlet tube(s).4. Remove any necessary components to access the pressure regulator.5. Disconnect the vacuum hose from the pressure regulator.6. Remove the pressure regulator attaching screws.7. Remove the pressure regulator from the fuel rail.To Install8. Discard the O-rings on the pressure regulator and replace them with new ones.9. Lubricate the O-rings with clean engine oil.10. Install the regulator into the fuel rail and tighten the retaining screws.11. Connect the vacuum hose to the regulator.12. Install any components removed to access the regulator.13. Install the air cleaner outlet tube(s).14. Connect the negative battery cable.
That depends where the regulator is fitted.