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Fuel Injector Leakage

  1. Using mechanics wire, secure each fuel injector to fuel rail. Disconnect fuel injector connectors. Remove fuel rail assembly from intake manifold. See REMOVAL, OVERHAUL & INSTALLATION article. Reconnect fuel lines to fuel rail. Locate underhood Data Link Connector (DLC) in left side of engine compartment.
  2. Connect a jumper wire between underhood DLC terminals F/P and GND. See Fig 1 . Turn ignition on. Tilt injectors about 60 degrees and check injector nozzles for fuel leaks. Fuel leakage should be less than one drop every 2 minutes. If fuel leakage exists, replace injector.
Fig 1: Identifying Data Link Connector Terminals
G97I06647Courtesy of MAZDA MOTORS CORP.