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Vacuum Solenoid Regulator

  1. Start engine and run until warm. Connect a vacuum gauge (using "T fitting) to vacuum line from regulator to carburetor.
  2. Accelerate engine quickly several times. Vacuum should increase quickly to 5.5 in. Hg.
  3. Pull choke knob out slightly until choke light comes on. Vacuum should quickly stabilize between 1.8-3.0 in. Hg.
  4. If regulator does not work properly, check vacuum hose connections, check for presence of vacuum at inlet line from manifold, and be sure all electrical connections are clean and tight. If electronic control unit functions properly when tested, replace vacuum regulator.
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