FUEL LINE PRESSURE INSPECTION [ZJ, Z6, LF]

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FUEL LINE PRESSURE INSPECTION [ZJ, Z6, LF]

B3E011401006W05

  Warning

  • Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause serious injury or death and damage. To prevent this, complete the following inspection with the engine stopped.

1. Follow "BEFORE SERVICE PRECAUTION" before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION [ZJ, Z6, LF].)

2. Disconnect the negative battery cable.

3. Disconnect the quick release connector (in the engine compartment). (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [ZJ, Z6, LF].)

4. Turn the lever of the SST parallel to the hose as shown in the figure.

ZJ, Z6

LF

5. Insert the SST quick release connector into the fuel pipe until a click is heard.

6. Verify that the quick release connector is firmly connected by pulling it by hand.

7. Connect the negative battery cable.

8. Connect the WDS or equivalent to the DLC-2.

9. Turn the ignition switch to the ON position.

10. Using the simulation function "FP", start the fuel pump.

11. Operate the fuel pump for 10 s.

12. Measure the fuel line pressure.

  • If not within the specification, inspect the following:
  If it less than the specification:

  - Fuel pump unit
  - Fuel line leakage

  If it exceeds the specification:

  - Fuel line clogging

  Fuel pressure
  350-410 kPa {3.57-4.18 kgf/cm2, 50.8-59.4 psi}

13. Stop the fuel pump.

14. Measure the fuel hold pressure after 5 min.

  • If not within the specification, inspect the following:

  - Fuel line for clogging or leakage

  Fuel hold pressure
  250 kPa {2.55 kgf/cm2, 36.2 psi} or more

15. Disconnect the SST.

16. Connect the quick release connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [ZJ, Z6, LF].)

17. Inspect all related parts by performing "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION [ZJ, Z6, LF].)