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Home >> Isuzu >> 1985 >> I-Mark 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Component Testing >> Vacuum Switching Valve >> Impulse
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Vacuum Switching Valve: Impulse

Apply 12 volts to vacuum switching valve. Check that air flows freely through valve. Remove voltage and check that air does not flow through valve. Replace valve, if necessary.