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Home >> Mazda >> 1988 >> RX-7 Turbo >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - EGI >> System Testing >> Fuel System Preparation
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Fuel System Preparation

  1. To prepare system for testing, release fuel pressure. Disconnect negative battery cable. Wrap a shop towel around the main fuel hose and disconnect main fuel hose from fuel line. Install adapter between main fuel hose and fuel line. See Fig 1 . Ensure adapter is installed in proper direction.
    CAUTION: Ensure adapter is not reversed during installation.
    Fig 1: Installing Multipressure Tester & Adapter
    G93497Courtesy of MAZDA MOTORS CORP.
  2. Disconnect EGR solenoid valve vacuum hose. See Fig 2 & Fig 3 . Install Multipressure Tester (49 9200 750A) vacuum hose using a 3-way line connector "Tee".
    Fig 2: Disconnecting EGR Solenoid Valve (Non-Turbo)
    G93493Courtesy of MAZDA MOTORS CORP.
    Fig 3: Disconnecting EGR Solenoid Valve (Turbo)
    G93494Courtesy of MAZDA MOTORS CORP.
  3. Install negative battery cable. Install multipressure tester leads on battery. Install jumper wire at Yellow wire terminals of check connector. See Fig 4 & Fig 5 . Turn ignition on. Check for fuel leaks. Remove jumper wire and tester after system has been tested.
Fig 4: Installing Check Connector Jumper Wire (Non-Turbo)
G93495Courtesy of MAZDA MOTORS CORP.
Fig 5: Installing Check Connector Jumper Wire (Turbo)
G93496Courtesy of MAZDA MOTORS CORP.
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