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Mazda Truck
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1992
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Navajo 2WD V6-4.0L OHV
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Testing and Inspection
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Component Tests and General Diagnostics
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Vacuum Related Components
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Vacuum Restrictor
Vacuum Restrictor
Vacuum Restrictor:
The flow rate should be equal in both directions.
A difference indicates a plugged or partially blocked restrictor that should be replaced.