2NZ-FE FUEL  FUEL INJECTOR  INSPECTION  


PROCEDURE

Hide 23250 1.INSPECT FUEL INJECTOR ASSEMBLY

a.
A116182C03
0.719,0.083 1.844,0.938 1.125,0.854 0.792,0.125 1,0.333 0.208,0.208 10 false *a
*a Component without harness connected
(Fuel Injector Assembly)


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

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 fuel injector assembly.


b.

Inspect the fuel injector assembly injection.

CAUTION:

Keep the fuel injector assembly away from sparks during the test.


i.
A264971C19
0.5,1.656 0.729,1.885 0.729,1.885 0.833,1.885 false 0.854,0.906 1.146,0.615 1.146,0.615 1.26,0.615 false 1.99,1.292 2.292,1.594 2.292,1.594 2.417,1.594 false 2.646,0.698 2.948,0.396 2.948,0.396 3.063,0.396 false 0.875,1.802 1.156,2.042 0.281,0.24 10 false *a 1.333,0.521 1.656,0.781 0.323,0.26 10 false *b 2.479,1.51 2.802,1.76 0.323,0.25 10 false *c 3.135,0.292 3.354,0.542 0.219,0.25 10 false *d
*a SST (Hose)
*b SST (Hose Band)
*c SST (Fuel Tube Connector)
*d Fuel Pipe (Vehicle Side)


Connect SST (fuel tube connector) to SST (hose) with SST (hose band), and then connect them to the fuel pipe (vehicle side).

SST
09268-31014  (09268-41700, 95336-08070)
09268-00010  (09268-00030)


ii.

Apply a light coat of gasoline to a new O-ring. Then install the O-ring onto the fuel injector assembly.


iii.
A264972C17
1.333,0.146 0.958,0.146 false 1.74,0.333 2.031,0.333 false 1.313,0.76 0.979,0.76 false 1.49,1.021 1.656,1.021 false 2.094,1.333 2.438,1.333 false 1.323,1.896 0.979,1.896 false 0.76,0.052 1.063,0.333 0.302,0.281 10 false *a 2.094,0.271 2.427,0.563 0.333,0.292 10 false *b 0.792,0.667 1.052,0.917 0.26,0.25 10 false *c 1.698,0.938 1.948,1.198 0.25,0.26 10 false *1 2.51,1.26 2.792,1.531 0.281,0.271 10 false *d 0.76,1.823 1.031,2.052 0.271,0.229 10 false *e
*1 O-ring
*a SST (Hose)
*b SST (Hose Band)
*c SST (Adapter)
*d SST (Clamp)
*e Vinyl Tube


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

SST
09268-31014  (09268-41110, 09268-41300, 09268-41700, 95336-08070)


iv.
A264974C09
1.938,0.427 2.469,0.427 false 2.135,1.417 2.5,1.417 false 1.229,0.365 0.74,0.365 false 0.563,0.271 0.823,0.563 0.26,0.292 10 *a 2.552,0.323 2.823,0.604 0.271,0.281 10 *b 2.552,1.333 2.844,1.563 0.292,0.229 10 *c
*a SST (Tie Band)
*b SST (Adapter)
*c SST (Clamp)


Tie SST (clamp) and SST (adapter) together with SST (tie band) as shown in the illustration.

SST
09268-31014  (09268-41110, 09268-41300, 09268-41800)


v.

Install a vinyl tube onto the fuel injector assembly.

CAUTION:

Install a suitable vinyl tube onto the fuel injector assembly to prevent fuel from spraying.



vi.

Set the fuel injector assembly in a graduated cylinder.


vii.

Operate the fuel pump with filter assembly.

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viii.
A264973C09
2.01,0.542 2.01,0.958 false 1.948,1.01 2.219,1.292 0.271,0.281 10 *a 1.052,1.365 1.385,1.635 0.333,0.271 10 *b
*a SST (Wire)
*b Connect


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

SST
09842-30080  

NOTICE:

Always switch the voltage on and off at the battery side, not the fuel injector assembly side.


Standard Injection Volume:
Battery Connection Condition Specified Condition
Positive (+) battery terminal - Negative (-) battery terminal Per 15 seconds 47 to 58 cc (2.9 to 3.5 cu. in.)


Difference between Each Fuel Injector Assembly:

11 cc (0.7 cu. in.) or less


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



c.

Check for fuel drop.

i.

In the condition above, disconnect SST (wire) from the battery and check for fuel drop from the fuel injector assembly.

Standard Fuel Drop:

1 drop or less per 12 minutes


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