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.

Follow the before repair procedure and perform the fuel line safety procedure. (See BEFORE REPAIR PROCEDURE .)
Disconnect the negative battery cable.
Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
Fix the fuel injector to the fuel distributor with a wire or the equivalent.
Connect the fuel hose.
Connect the negative battery cable.

Fig 1: Fixing Fuel Injector To Fuel Distributor With Wire
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- Shorting the wrong terminal of the check connector may cause malfunctions. Make sure to short only the specified terminal.
Ground the check connector terminal F/P using the jumper wire.

Fig 2: Connecting Check Connector Terminal F/P To Ground
Courtesy of MAZDA MOTORS CORP.
Turn the ignition switch to the ON position and operate the fuel pump:
Tilt the fuel injector at an angle of 60° to inspect for leakage.

Fig 3: Tilting Fuel Injector At An Angle For Leakage Inspection
Courtesy of MAZDA MOTORS CORP.
- If not within the specification, replace the fuel injector.
Fig 4: Locating Fuel Injector Leakage Spot
Courtesy of MAZDA MOTORS CORP.

Test condition
- Fuel pressure: 392 kPa {4.00 kgf/cm ² , 56.9 psi}
- Atmosphere temperature: Normal temperature
  Leakage amount
Fig 5: Leakage Amount
Courtesy of MAZDA MOTORS CORP.
Turn the ignition switch to the LOCK position and disconnect the jumper wire.
Inspect all parts by performing the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .)