Mazda MX-3 silhouetteMX-3

FUEL INJECTOR - Installation Note

F2-116prose procedure
Continued from F2-115

Installation Note

Fuel Injector

  1. 1
    Use new O-rings.
    Drawing of a fuel injector being fitted into the fuel distributor. Callouts point to the O-RING and the OIL MARK; an arrow shows the seating direction.
  2. 2
    Apply a small amount of clean engine oil to the O-rings before installing them.
  3. 3
    Check the inside of the fuel distributors for fuel deposits, and clean them with gasoline if necessary.
  4. 4
    Fit the fuel injector squarely into the fuel distributor, and gradually screw and install it.
  5. 5
    Fit the injector tab into the fuel distributor notch.
    Drawing showing the fuel injector tab and the fuel distributor notch alignment. Callout points to NOTCH.
  6. 6
    Install the harness in the reverse order of removal.

Fuel leakage test

  1. 1
    Install the fuel hoses shown in the figure.
    Engine bay drawing showing the fuel hoses installed for the leakage test. Callouts point to FUEL MAIN HOSE and FUEL RETURN HOSE.
  2. 2
    Connect the data link connector terminals F/P and GND by using a jumper wire.
    Two diagrams: left shows the data link connector terminal layout with GND and F/P terminals jumpered; right shows a jumper wire installed across the diagnosis connector. Callouts: GND, F/P, JUMPER WIRE, DIAGNOSIS CONNECTOR.
  3. 3
    Turn the ignition switch to ON and check for fuel leaks from the fuel distributor.
  4. 4
    If fuel leaks, check the fuel injector O-ring and fuel distributor.

Fuel distributor

  1. 1
    Use new injector insulators.
    Cross-section drawing of the fuel distributor, injector insulator and intake manifold. Callouts point to FUEL DISTRIBUTOR, INSULATOR and INTAKE MANIFOLD.
  2. 2
    Install the insulators, making sure that each is pressed in fully, and that it is not twisted or bent. Incorrectly installed insulators can cause rough idle.
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