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Home >> Nissan-Datsun >> 1982 >> 200SX 2D Hatchback, Automatic Trans, Trans Mfr CD 3N71B >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Spark Timing Control System >> Testing >> Vacuum Delay Valve
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Vacuum Delay Valve

  1. Remove vacuum delay valve from engine. Blow air into valve from carburetor or intake manifold side of valve. Air should pass through valve without resistance.
  2. Blow air through distributor side of valve. Air should not pass through valve without resistance. If vacuum delay valve does not perform as described, replace it.
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