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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEFUEL DELIVERYFUEL SYSTEM [L3]FUEL INJECTOR INSPECTIONLEAKAGE INSPECTION
2010 Mazda 5 Sport, 2.3 L, Standard

Leakage Inspection

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Leakage Inspection
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 .)
  2. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [L3] .)
  3. Disconnect the negative battery cable.
  4. Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
  5. Fix the fuel injector to the fuel distributor with a wire or the equivalent.
  6. Connect the fuel hose.
  7. Connect the negative battery cable.
    Fig 1: Identifying Fuel Injectors
    G05544729Courtesy of MAZDA MOTORS CORP.
  8. Ground the following PCM terminal 1BG using a jumper wire.
  9. Turn the ignition switch to the ON position to start the fuel pump.
    Fig 2: PCM Connector Terminal Identification
    G05544730Courtesy of MAZDA MOTORS CORP.
  10. Tilt the fuel injector at an angle of 42°  to inspect for leakage.

    Leakage amount 

    Less than 1 drop/2 min 

    Fig 3: Identifying Fuel Injectors
    G05544731Courtesy of MAZDA MOTORS CORP.
  11. Turn the ignition switch to the LOCK position to stop the fuel pump and disconnect the jumper wire.
  12. Remove the wire or equivalent securing the fuel injector.
  13. Install the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
  14. Inspect all related parts by performing "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION .)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.