Injector Fuel Leakage & Delivery Volume
- Remove dynamic chamber and loosen delivery pipe attaching bolts. Using wire, tie injectors tightly onto delivery pipe.CAUTION: Ensure that injectors are tied tightly to fuel delivery pipe. Failure to do so will cause fuel to spray out of loose connections and cause fire hazard.
- Turn ignition on and jumper between 2 terminals of fuel pump test circuit connector. See Figure . With system pressurized, there should be no fuel leakage at injectors.
- Leave system pressurized for 5 minutes and note any leakage. Only a very slight amount of fuel leakage is acceptable.
- Remove jumper from fuel pump test connector. Attach piece of hose between injector and a graduated cylinder. Connect Injector Checker (49 9200 040) to injector electrical connector. See Fig 1
.CAUTION: Be extremely careful when connecting injector checker to battery; always work away from sparks or open flames.
- Turn ignition on, jumper fuel pump test connector and energize injector by connecting injector checker's leads to battery voltage. Measure injector fuel delivery volume for 15 seconds. Volume produced in 15 seconds should be 5-6.7 oz. (.15-.2 L).