Remove fuel injector. Connect Injection Measuring Tool Set (9268-41045). 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.
Connect Jumper Wire (00843-18020) between terminals +B and FG of DLC No. 1. See Figure. Reconnect negative battery cable. 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	3.3-3.9 (54-64)
Difference Between Injectors	0.3 (5)

Fig 1: Connecting Fuel Injection Measuring Tool Set (ES300)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Fuel Injector Volume