Protege 1999-2000

Fuel Rail (Supply Manifold) & Injectors


Removal & Installation

Specific to:

Mazda Protege 1999-2003

Mazda Protege5 2002-2003

  1. Before servicing the vehicle, refer to the Precautions section.
  3. Relieve the fuel system pressure.
  5. Remove or disconnect the following:

    Negative battery cable
    Accelerator cables and the cable bracket
    Fuel injector connectors and wiring harness
    Fuel lines at the fuel rail
    Vacuum hose from the fuel pressure regulator
    Fuel rail mounting bolts, spacers and insulators
    Fuel rail, with the injectors attached
    Fuel injectors, grommets and O-rings from the fuel rail
    O-rings from the fuel injectors


To install:

  1. Install or connect the following:

    New O-rings and grommets lubricated with engine oil on the fuel injectors
    Insulators and injectors on the intake manifold
    Grommets and the fuel rail onto the injectors. Torque the bolts to 14-18 ft. lbs. (19-25 Nm).
    Vacuum hose to the fuel pressure regulator
    Fuel lines to the fuel rail
    Fuel injector wiring harness
    Cable bracket. Torque the bolt to 70-95 inch lbs. (8-11 Nm).
    Accelerator cables, if removed, adjust as necessary
    Negative battery cable

  3. Turn the ignition switch ON to pressurize the fuel system.
  5. Check for leaks and correct as necessary, before starting the engine.

Specific to:

Mazda 6 2003

Mazda 626 1999-2002

Mazda Miata 1999-2004

Mazda Millenia 1999-2002

Mazda Protege 1999-2003

Mazda Protege5 2002-2003

Fuel injection systems remain under pressure after the engine has been turned OFF. Properly relieve fuel pressure before disconnecting any fuel lines. Failure to do so may result in fire or personal injury. Do not allow fuel spray or fuel vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher nearby. Never store fuel in an open container due to risk of fire or explosion.