Fuel Injector Volume
- Remove fuel injector. See REMOVE/INSTALL/OVERHAUL article. Connect Injection Measuring Tool Set (9268-41046). See Fig 1. Attach a piece of vinyl tubing to bottom of fuel injector to prevent fuel splash. Put vinyl tubing into a graduated measuring cylinder.
- If Lexus scan tool is not available, go to next step. If using a Lexus scan tool, connect scan tool to Data Link Connector (DLC) No. 3. Turn ignition on. DO NOT start engine. Using scan tool manufacturer's instructions, activate electric fuel pump. Go to step 4).
- Remove trunk floor mat. Remove trunk trim panel. Disconnect fuel pump connector. Connect battery voltage to specified terminals on fuel pump connector to activate fuel pump. See Fig 2. Go to next step.
- Turn ignition on, engine off. Connect EFI Inspection Wiring (09842-30070) between fuel injector and a 12-volt battery for 15 seconds. Compare measured volume with specified volume. See FUEL INJECTOR VOLUME (15 SECONDS) table. Replace injector if one or more of the following conditions exists:
- Volume is not within specification.
- Difference in volume between injectors exceeds specification.
- More than one drop leaks from injector within one minute of disconnecting EFI inspection wiring from battery.
FUEL INJECTOR VOLUME (15 SECONDS)
| Application | Cu. In. (cc) |
|---|---|
| Volume | 4.3-5.4 (70-88) |
| Difference Between Injectors | 0.5 (8) |