lemon-mirror:
Home >> Mazda >> 2005 >> 3 i, Automatic >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Tank Inspection

Fuel Tank Inspection

NOTE:
  • The two rollover valves built into the fuel tank and check valves (two-way) built into the rollover valves are inspected in this inspection.
  1. Follow "BEFORE SERVICE PRECAUTION" before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION )
  2. Disconnect the negative battery cable.
  3. Remove the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION )
  4. Level the fuel tank.
  5. Perform the following procedure to verify the fuel tank airtightness.
    1. Plug the fuel pump unit pipe, ports B and C.
    2. Apply a pressure to port A and wait for a while.
    3. Verify that there is no air leakage from the fuel tank.
      • If there is no airflow, replace the fuel tank.
    Fig 1: Checking Fuel Tank Airtightness - Ports B, C & Fuel Tank Unit Pipe Plugged
    G03635879Courtesy of MAZDA MOTORS CORP.
  6. Apply a pressure to port A and wait for a while.
  7. With the pressure still applied, verify that there is airflow from port B and C.
    • If there is no airflow from either port, replace the fuel tank.
    Fig 2: Verifying Airflow From Port B & C
    G03635880Courtesy of MAZDA MOTORS CORP.
  8. Place the fuel tank upside down.
  9. Apply a pressure to port A and wait for a while.
  10. With the pressure still applied, verify that there is no airflow from port B and C.
    • If there is airflow from either port, replace the fuel tank.
    Fig 3: Verifying No Airflow From Port B & C - Tank Upside Down
    G03635881Courtesy of MAZDA MOTORS CORP.
· About lemon-mirror