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Home >> Mazda >> 1984 >> RX-7 GSL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System - CARBURETED >> Component Testing >> Switching Solenoid Valve Signal Check

Switching Solenoid Valve Signal Check

  1. Warm engine to normal operating temperature. Connect tachometer to engine. Disconnect the connector from the throttle sensor and connect a jumper wire to terminals "A" and "C" of the connector. Disconnect the vacuum sensing tube (from switching solenoid valve to pipe) at the pipe. See Figure .
  2. Place a finger over the vacuum sensing tube opening and make sure air is sucked into the tube. Gradually increase the engine speed and make sure that air is not sucked into the tube when engine RPM is 1000-2000 RPM or more.
  3. Disconnect the connector from the number 1 water temperature switch and connect a jumper wire to both terminals of the connector. Pull the choke knob out about .6" (15 mm). Increase the engine speed and make sure that air is sucked into the tube at any engine speed.
  4. Disconnect the jumper wire from water temperature switch connector and reconnect the connector to water temperature switch. Disconnect the jumper wire from terminals "A" and "C" and connect the connector to the throttle sensor.
  5. Gradually increase the engine speed and make sure air is sucked into tube at any engine speed. Air should not be sucked into the tube if the engine is accelerated quickly. Reconnect the vacuum sensing tube to pipe.
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