| Last Modified: 11-27-2007 | 1.6 G | |
| Service Category: Engine/Hybrid System | Section: Fuel System | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000WQQ027X |
| Title: 3UR-FE FUEL: FUEL INJECTOR: INSPECTION (2008 LX570) | ||
INSPECTION
1. INSPECT FUEL INJECTOR ASSEMBLY
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(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the injector assembly. |
(b) Inspect the injection volume.
CAUTION:
This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both the fuel and the electricity. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.
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(1) Remove the fuel pipe clamp. |
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(2) Disconnect the fuel tube. |
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(3) Connect SST to the fuel pipe (the vehicle side). |
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(4) Install the O-ring to the fuel injector. |
(5) Install SST and the tube to the fuel injector.
SST: 09268-31012
09268-41300
09268-41500
09268-41600
90467-13001
95336-08070
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(6) Put the injector into a graduated cylinder. CAUTION:
Install a strong rubber tube onto the injector to prevent gasoline from splashing. |
(7) Operate the fuel pump (turn the engine switch on (IG)).
(8) Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.
SST: 09842-30090
Standard injection volume:
83 to 99 cm3 (5.0 to 6.0 cu in.) per 15 seconds
Difference between each injector:
16 cm3 (1.0 cu in.) or less
If the injection volume is not as specified, replace the injector assembly.
(c) Check for fuel drop.
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(1) In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel drop from the injector. Standard fuel drop: 1 drop or less in 12 minutes If the fuel drop is not as specified, replace the injector assembly. |
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