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Fuel Injector Volume - Miata

  1. Disconnect battery. Remove fuel rail assembly and injectors from intake manifold. See REMOVAL, OVERHAUL & INSTALLATION article.
  2. Using mechanics wire, secure each fuel injector to fuel rail. Disconnect fuel injector connectors. Reconnect fuel lines to fuel rail.
  3. Using Service tool (49L018901), connect battery to each injector in turn. Using a fused jumper wire, connect DLC-1 connector terminals F/P and GND. Turn ignition on for 15 seconds. Measure fuel injector volume.
  4. If injector output volume is less than 68-88 cc's, replace suspect injector, then check next injector. If injector output volume is 68-88 cc's or more, check next injector.
  5. When all injectors have been checked, reinstall all components. recheck system.
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