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Injector Delivery Volume

  1. With delivery pipe and injectors removed, secure injectors tightly onto delivery pipe with wire. Install hose on injector. Install Injector Checker (49 B092 953) on injector. See Fig 1 .
  2. Install jumper between 2 terminals of fuel pump test circuit connector. See BASIC TESTING article for test connector location. Turn ignition on. Connect injector checker to battery voltage. Note injector volume after 15 seconds.
  3. Replace injectors which do not meet volume specifications. See INJECTOR VOLUME SPECIFICATIONS table. Check primary and secondary injectors in the same manner.
CAUTION: Use care when connecting injector checker to prevent sparks around fuel area.
INJECTOR VOLUME SPECIFICATIONS

Application Oz. (cc)
Non-Turbo 1.35-1.80 (45-60)
Turbo 2.25-2.70 (75-90)
Fig 1: Testing Injector Delivery Volume
G117783Courtesy of MAZDA MOTORS CORP.