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Home >> Mazda >> 1986 >> 323 Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Evaporation System >> System Inspection >> Fuel Injected Models
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Fuel Injected Models

  1. Start and warm engine to normal operating temperature. With engine idling, connect voltmeter to No. 1 three-way solenoid valve (Black/Yellow terminal). Voltage reading should be about 12 volts. If not, check solenoid and wiring to control unit.
  2. Disconnect top hose from No. 1 purge control valve on charcoal canister and place finger over open end of hose. Increase engine speed to 2000 RPM and ensure vacuum is not created at hose. If vacuum is present, check No. 1 three-way solenoid valve and wiring to control unit. Remove finger from hose and leave hose disconnected. Return engine to idle.
  3. Disconnect neutral/safety switch connector on manual transaxle, or inhibitor switch connector on automatic transaxle. Note voltage reading on voltmeter should now read 1.5 volts.
  4. Place finger over purge control valve hose and increase engine speed to 2000 RPM. Vacuum should be created at hose end. If not, check No. 1 three-way solenoid valve and wiring to control unit.
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