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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 629 (FUEL SYSTEM)FUEL INJECTOR INSPECTIONLEAKAGE INSPECTION
2008 Mazda 6 s Sport, 4D Hatchback, Standard

Leakage Inspection

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Leakage Inspection
WARNING: This page is about a different car, the 2008 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
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 the before repair procedure and perform the fuel line safety procedure. (See BEFORE REPAIR PROCEDURE ).
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION )
  3. Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION ).
  4. Fix the fuel injector to the fuel distributor with a wire or the equivalent.
    Fig 1: Fixing Fuel Injectors To Fuel Distributor With Wire
    G04562856Courtesy of MAZDA MOTORS CORP.
  5. Connect the fuel hose.
  6. Connect the negative battery cable.
    CAUTION:
    • Shorting the wrong terminal of the check connector may cause malfunctions. Make sure to short only the specified terminal. 
  7. Ground the check connector terminal F/P using the jumper wire.
  8. Turn the ignition switch to the ON position and operate the fuel pump.
    Fig 2: Locating Check Connector
    G04562820Courtesy of MAZDA MOTORS CORP.
  9. Tilt the fuel injector at an angle of 60°  to inspect for leakage.
    Fig 3: Tilting Fuel Injector At An Angle
    G04562858Courtesy of MAZDA MOTORS CORP.
    • If not within the specification, replace the fuel injector.

    Test condition 

    • Fuel pressure: 392 kPa {4.00 kgf/cm2 , 56.9 psi}
    • Atmosphere temperature: Normal temperature
      Fig 4: Locating Leakage & Fuel Injector
      G04562859Courtesy of MAZDA MOTORS CORP.
    LEAKAGE AMOUNT CHART

    Engine Fuel injector Leakage amount (approx.) (1 drop)
    Position Color
    13B-MSP (Standard Power) FP1, RP1 Red 110 min. or more
    FS, RS Blue 30 min. or more
    13B-MSP (High Power) FP1, RP1 Red 110 min. or more
    FP2, RP2, FS, RS Yellow 70 min. or more
  10. Turn the ignition switch to the LOCK position and disconnect the jumper wire.
  11. Inspect all parts by performing the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ).
RENDER: 1.0x

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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.