Fuel Injector: Inspection: Inspection

INSPECT FUEL INJECTOR ASSEMBLY

Measure the resistance according to the value(s) in the table below.

Fig 1: Inspecting Fuel Injector Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	11.6 to 12.4 Ω

If the result is not as specified, replace the injector assembly.

INSPECT INJECTION VOLUME AND LEAKAGE

Check the injector injection.

Fig 2: Identifying Fuel Injector Leakage Points

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09268-31013
1. 09268-41091
2. 09268-41120
3. 09268-41141
4. 09268-41410
5. 09268-41500
6. 90467-13001
7. 95333-06030
8. 95336-08070

TEXT IN ILLUSTRATION

*1	Fuel pressure Regulator
*2	SST (Union)
*3	SST (Clip)
*4	SST (Fuel Tube Connector)
*5	SST (Hose)
*6	SST (Adapter)
*7	SST (Clamp)
*8	Fuel injector
*9	Fuel Pipe
*10	SST (T-Joint)

WARNING:

This test involves high-pressure fuel and electricity.
Take every precaution regarding safe handling of both the fuel and the electrical parts.
Perform this test in a safe area, and avoid any sparks or flame.
Do not smoke.

Assemble SST as shown in the illustration.
Discharge the fuel system pressure. Refer to PRECAUTION .
Disconnect the fuel inlet hose (fuel tube connector) from the fuel pipe.
Remove the bolt and disconnect the fuel pressure regulator from the fuel delivery pipe See step 4.
NOTE:
Do not disconnect the No. 2 fuel pipe from the fuel pressure regulator.

Connect SST to the fuel pipe.

Fig 3: Identifying Fuel Tube Connector And Fuel Pipe

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09268-31013
1. 09268-41500

TEXT IN ILLUSTRATION

*1	SST (Fuel Tube Connector)
*2	Fuel Pipe

WARNING:

Always read the precautions before connecting the fuel tube connector.

Connect SST (hose) to the fuel inlet of the pressure regulator with another SST (union) and the 2 bolts.

Fig 4: Identifying Fuel Pressure Regulator And SST Components

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST: 09268-31013
1. 09268-41091
2. 95336-08070

TEXT IN ILLUSTRATION

*1	Fuel Pressure Regulator
*2	SST (Hose)
*3	No. 2 Fuel Pipe Sub-assembly
*4	SST (Union)

Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf)

Connect the fuel return hose to the fuel outlet of the pressure regulator.
Install a new O-ring to the injector.

Fig 5: Identifying Hose, Clip, O-Ring, Adapter, Vinyl Tube And Clamp
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Connect SST (adapter and hose) to the injector, and hold the injector and adapter with SST (clamp).

SST: 09268-31013
1. 09268-41141
2. 09268-41410
3. 90467-13001
4. 95336-08070

TEXT IN ILLUSTRATION

*1	SST (Hose)
*2	SST (Clip)
*3	O-Ring
*4	SST (Adapter)
*5	Vinyl Tube
*6	SST (Clamp)

Put the injector into a graduated cylinder.
WARNING:
Install a suitable vinyl tube onto the injector assembly to prevent gasoline splashes.
Operate the fuel pump. Refer to ON-VEHICLE INSPECTION - Step 1 .

Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times.

SST: 09842-30080

Fig 6: Identifying Special Tool And Fuel Injector

TEXT IN ILLUSTRATION

*1	SST (Wire)
*a	Connect

Standard injection volume

71 to 86 cm³ (4.3 to 5.2 cu. in.) per 15 seconds

Difference between each injector

15 cm³ (0.9 cu. in.) or less

NOTE:

Always turn the voltage on and off on the battery side, not the fuel pump side.

If the result is not as specified, replace the injector assembly.

Check for fuel leaks.
1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel leaks from the injector.
  Standard fuel drop
  
  1 drop or less per 12 minutes
  
  If the fuel drop is not as specified, replace the injector assembly.