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Home › Mazda › 1985 › GLC Base › Repair and Diagnosis › Engine Performance › System › Feedback Carburetor System › Testing › Idle-Up System › System Check

System Check

  1. Warm engine to operating temperature and run at idle. Turn A/C on, and verify that servo diaphragm stem is raised.
  2. The servo diaphragm is activated when A/C is on and engine speed is 1400-1900 RPM.
  3. Turn A/C off.
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