Mazda 2: Fuel Line Pressure

FUEL LINE PRESSURE INSPECTION

WARNING:

CAUTION:

1. Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION).

2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION).

3. Disconnect the quick release connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION).

Mazda 2. FUEL LINE PRESSURE INSPECTION

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

Mazda 2. FUEL LINE PRESSURE INSPECTION

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. Start the fuel pump using the following procedure.

Using M-MDS

Without using M-MDS

Mazda 2. FUEL LINE PRESSURE INSPECTION

CAUTION:

  • Short the specified terminals because shorting the wrong terminal of the relay and fuse block may cause malfunctions.

Mazda 2. FUEL LINE PRESSURE INSPECTION

8. Operate the fuel pump for 10 s.

9. Measure the fuel line pressure.

If it less than the specification:

  • Fuel pump unit
  • Fuel line for clogging or leakage

If it exceeds the specification:

  • Fuel line clogging

Fuel pressure

10. Stop the fuel pump using the following procedure.

Using M-MDS

Without using M-MDS

11. Measure the fuel hold pressure after 5 min.

Fuel hold pressure

12. Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION).

13. Disconnect the SST.

14. Connect the quick release connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION).

15. Complete the "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION).

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FUEL PUMP UNIT REMOVAL/INSTALLATION WARNING: Fuel is very flammable liquid. If fuel spills or leaks from the pressurized fuel system, it will cause serious injury or death and facility breakage.

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QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION WARNING: Fuel is very flammable liquid. If fuel spills or leaks from the pressurized fuel system, it will cause serious injury or death and facility b

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